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Topics referred to by the same term
Look up APS in Wiktionary, the free dictionary. APS or Aps or aps or similar may refer to: Algeria Press Service, a news agency Arizona Public Service
APS
Assault rifle
The APS-95 (The Ero) was an assault rifle manufactured in Croatia by Končar-Arma d.o.o since 1995 and offered for export up to at least 2007. The manufacturing
APS-95
WWII-era military aircraft surface search radar
The AN/APS-2, originally known as ASG (air-surface, model G), was a surface search radar developed by Philco originally for use in US Coast Guard blimps
AN/APS-2
Danish form of a Limited Liability Company
Anpartsselskab (Danish pronunciation: [ˈænpʰɑtsselˌskɛˀp]; ApS) is the Danish term for a private limited company. ApS, when appended to the end of a Danish company
Anpartsselskab
Soviet underwater assault firearm firing unrifled steel flechettes
The APS underwater assault rifle (Russian: Автомат Подводный Специальный, romanized: Avtomat Podvodny Spetsialnyy, lit. 'Special Underwater Assault Rifle')
APS_underwater_rifle
Image sensor format
Advanced Photo System type-C (APS-C) is an image sensor format approximately equivalent in size to the Advanced Photo System film negative in its C ("Classic")
APS-C
Organization of physicists
The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly
American_Physical_Society
The American Pain Society (APS) was a professional membership organization and a national chapter of the International Association for the Study of Pain
American_Pain_Society
Type of Soviet machine pistol
Пистолет Стечкина (АПС), romanized: Avtomaticheskiy Pistolet Stechkina (APS)) is a selective fire machine pistol manufacturered by Russian company Vytatsky
Stechkin_automatic_pistol
American multifunction radar
mechanically scanned radar is a development of Raytheon's AN/APS-149 radar. Compared to the AN/APS-137, it is smaller in size, lighter, and uses less power
AN/APY-10
Image sensor, consisting of an integrated circuit
(APS) is an image sensor where each pixel sensor unit cell has a photodetector (typically a pinned photodiode) and one or more active transistors. APS
Active-pixel_sensor
Multifunction radar
The AN/APS-154 Advanced Airborne Sensor (AAS) is a multifunction radar installed on the P-8 Poseidon maritime patrol aircraft. The radar is built by Raytheon
AN/APS-154
Airborne search radar
The AN/APS-20 was an airborne early warning, anti-submarine, maritime surveillance and weather radar developed in the United States in the 1940s. Entering
AN/APS-20
(OpenAPS) project is a free and open-source project that aims to make basic artificial pancreas system (APS) technology available to everyone. The OpenAPS
OpenAPS
Greek football club
A.P.S. Zakynthos (Greek: Α.Π.Σ. Ζάκυνθος, Αθλητικός Ποδοσφαιρικός Σύλλογος Ζάκυνθος) is a Greek professional football club, based in Zakynthos. It was
A.P.S._Zakynthos
Alternative method of third rail electrical pick-up for street trams
Alstom APS (originally known as Alimentation par Sol or Alimentation Par le Sol (which literally means "feeding via the ground"), and later rebranded
Alstom_APS
The APS Bank (Apostleship of Prayer Savings Bank), successor of the Unione Cattolica San Giuseppe, is a Maltese bank established in 1910 by a Jesuit,
APS_Bank
Award
Recipient 2003:John Wheeler". www.aps.org. Retrieved 2023-10-07. "Einstein Prize Recipient 2003: Peter Bergmann". www.aps.org. Retrieved 2023-10-07. "Einstein
Einstein_Prize_(APS)
Israeli military active protection system for vehicles
Forces designation מעיל רוח, 'Windbreaker') is an active protection system (APS) for military armored vehicles designed by Rafael Advanced Defense Systems
Trophy_(countermeasure)
Still image film format
Advanced Photo System (APS) is a film format for consumer still photography first marketed in 1996 and discontinued in 2011. It was sold by various manufacturers
Advanced_Photo_System
P2V-6Neptune ZPG-1W and ZPK AN/APS-34 improved AN/APS-33 AN/APS-35 search radar with IFF integrated, by Philco AN/APS-37 search radar AN/APS-38 search radar for
List_of_radars
In-car infotainment system
Somewhat confusingly, COMAND 2.5 (not to be confused with the much later COMAND-APS NTG2.5) actually refers to the first generation of COMAND systems, introduced
Mercedes-Benz_COMAND
Greek football club
Atromitos Football Club (Greek: Π.Α.Ε. Α.Π.Σ. Ατρόμητος Αθηνών, PAE APS Atromitos Athinon), also simply known as Atromitos lit. 'Fearless'), is a Greek
Atromitos_F.C.
Armoured personnel carrier
The Pindad APS-2 or APS-2 (Indonesian: Angkut Personel Sedang-2, lit. 'Medium Personnel Carrier'), also known as APS-1V1 is an armored vehicle made by
Pindad_APS-2
Armoured personnel carrier
The Pindad APS-1 or APS-1 (Indonesian: Angkut Personel Sedang-1, lit. 'Medium Personnel Carrier') is an armored vehicle made by the Indonesian defense
Pindad_APS-1
Medal". www.aps.org. Retrieved 22 August 2020. "APS Division of Quantum Information Prizes & Awards". www.aps.org. Retrieved 3 May 2026. "APS Honors Call
List of American Physical Society prizes and awards
List_of_American_Physical_Society_prizes_and_awards
Immune disorder leading to increased risk of blood clots
antiphospholipid antibody syndrome (APS or APLS), is an autoimmune, hypercoagulable state caused by antiphospholipid antibodies. APS can lead to blood clots (thrombosis)
Antiphospholipid_syndrome
Physical Society (2011–present) "APS and Unit Fellowships". American Physical Society. Retrieved November 6, 2025. "APS Fellows Archive". American Physical
List of fellows of the American Physical Society
List_of_fellows_of_the_American_Physical_Society
Copy protection system in VHS and DVDs
The Analog Protection System (APS), also known as Analog Copy Protection (ACP) or Macrovision, is a VHS and DVD copy protection system originally developed
Analog_Protection_System
Academic research society
The Association for Psychological Science (APS), previously the American Psychological Society, is an international non-profit organization whose mission
Association for Psychological Science
Association_for_Psychological_Science
American psychologist (born 1946)
Association for Psychological Science (APS) James McKeen Cattell Fellow in 2013, an APS Mentor Awardee in 2019, and an APS William James Fellow in 2020, and
Carol_Dweck
Federal civil service of Australia
The Australian Public Service (APS) is the federal civil service of the Commonwealth of Australia responsible for the public administration, public policy
Australian_Public_Service
An attending physician statement (APS) is a report by a physician, hospital, or medical facility that has treated, or is currently treating, a person
Attending_physician_statement
American scientific learned society
Phytopathological Society (APS) is an international scientific organization devoted to the study of plant diseases (phytopathology). APS promotes the advancement
American Phytopathological Society
American_Phytopathological_Society
Lens mount
6 mm and a flange depth of 20.0 mm. The L-mount exists in two versions, an APS-C version (TL) and a full-frame version (SL). The two versions are mechanically
Leica_L-Mount
Utility holding company in Arizona, US
Arizona Public Service (APS). It is publicly traded on the New York Stock exchange and a component of the S&P 500 stock market index. APS is the largest utility
Pinnacle_West_Capital
Robotic system that parks cars
system (APS) is a mechanical system designed to minimize the area and/or volume required for parking cars. Like a multi-story parking garage, an APS provides
Automated_parking_system
American psychological scientist and neuroscientist
Northeastern University". www.affective-science.org. Retrieved 2021-07-18. "APS Honors 13 Psychological Scientists With 2025 Lifetime Achievement Awards"
Lisa_Feldman_Barrett
Particle accelerator
The Advanced Photon Source (APS) at Argonne National Laboratory (in Lemont, Illinois) is a storage-ring-based high-energy X-ray light source facility
Advanced_Photon_Source
International news agency headquartered in Algiers
Algeria Press Service (APS; Arabic: وكالة الأنباء الجزائرية (وأج), romanized: Wakālat al-’Anbā’ al-Jazā’iriyyah (WĀJ), Tamazight: Tanegga n Yisalan n
Algeria_Press_Service
School association in Victoria, Australia
The Associated Public Schools of Victoria (APS) are a group of eleven independent schools in Victoria, Australia, similar to the Athletic Association
Associated Public Schools of Victoria
Associated_Public_Schools_of_Victoria
Type of aircraft radar
The AN/APS-4, originally designated ASH (air-surface, model H), was a lightweight 3-cm airborne radar developed during World War II for combined air-to-air
AN/APS-4_search_radar
implemented by creating an APS package for this application, and APS package deployment creates an APS application. Free APS Standard was EOL'd by Cloudblue
Application Packaging Standard
Application_Packaging_Standard
Military aircraft multimode radar family
AN/APS-130 is a derivative of AN/APQ-156 and the upgrade of AN/APQ-129, by applying the knowledge gained from AN/APQ-156 to improve AN/APQ-129. AN/APS-130
AN/APG-76_radar_family
Professional association for psychologists
Psychological Society (APS) is Australia's leading association for psychologists in Australia, with more than 25,000 members. The APS works to improve the
Australian Psychological Society
Australian_Psychological_Society
United States Army modernization and reorganization plan from 2006 to 2016
stocks (APS) for supplying entire Brigade Combat Teams (BCTs), at several areas of responsibility (AORs): APS-1 is Continental US (CONUS) APS-2 in EUCOM
Reorganization plan of United States Army
Reorganization_plan_of_United_States_Army
com/products/sirui-sniper-series-16-75mm-f1-2-aps-c-frame-autofocus-lens-set https://petapixel.com/2024/06/17/sirui-expands-sniper-aps-c-series-with-16mm-and-75mm-f-1-2-lenses/
List of third-party Sony E-mount lenses
List_of_third-party_Sony_E-mount_lenses
Open-access scholarly publication
underlying research papers on which the commentaries are based. About Physics APS Publications: Physics Magazine APS Announces Physics Official website
Physics_(magazine)
Armoured personnel carrier
The Anoa had been officially unveiled to the public under the designation APS-3 (Indonesian: Angkut Personel Sedang, English: Medium Personnel Carrier)
Anoa (armoured personnel carrier)
Anoa_(armoured_personnel_carrier)
Convent school in Roorkee, Uttarakhand, India
St Gabriel's Academy is an English-Medium convent school from Kindergarten through Grade 12 located in the town of Roorkee, Uttarakhand, India. It is affiliated
St_Gabriel's_Academy,_Roorkee
Biennial human rights award
Society prizes and awards List of physics awards "Andrei Sakharov Prize". aps.org. American Physical Society. Retrieved 28 November 2019. "First Andrei
Andrei_Sakharov_Prize_(APS)
School in India
The Indian Army Public Schools (APS) are a chain of educational institutions under regional commands of Indian Army established for the purpose of providing
Indian_Army_Public_Schools
Soviet active protection system
(Russian: Дрозд, IPA: [ˈdrost] , lit. 'thrush') is an active protection system (APS) developed in the Soviet Union, designed for increasing tanks' protection
Drozd
is a classification scheme developed by the American Physical Society (APS) as a universal classification scheme covering all branches of physics including
PhySH
2024 APS-C mirrorless interchangeable-lens camera
The Nikon Z50II is an APS-C mirrorless interchangeable-lens camera (1.5x APS crop) announced by Nikon on November 7, 2024. It is the successor to the Nikon
Nikon_Z50II
Height/width proportion of an image
(APS) film camera. The APS camera was capable of selecting any of three image formats, APS-H ("High Definition" mode), APS-C ("Classic" mode) and APS-P
Aspect_ratio_(image)
Estonian wrestler (born 1987)
Eerik Aps (born 22 October 1987 in Tallinn) is an Estonian wrestler. He started wrestling in 1994. He placed 5th at 2017 European Wrestling Championships
Eerik_Aps
Medical condition
syndrome type 2, a form of autoimmune polyendocrine syndrome also known as APS-II, or PAS II, is the most common form of the polyglandular failure syndromes
Autoimmune polyendocrine syndrome type 2
Autoimmune_polyendocrine_syndrome_type_2
Star in the constellation Apus
Bayer designation that is Latinized from η Apodis, and abbreviated Eta Aps or η Aps, respectively. Based upon parallax measurements from Gaia Data Release
Eta_Apodis
Private school sporting association in Gold Coast, Queensland, Australia
Associated Private Schools (APS) is a sporting association of eight private schools in Gold Coast, Queensland, Australia. The 2019 APS Rugby Grand Final ended
Associated_Private_Schools
Independent day school in Australia
associations: Independent Schools Victoria (ISV) Associated Public Schools (APS) Junior School Heads Association of Australia (JSHAA) Headmasters' and Headmistresses'
Haileybury_(Melbourne)
European telecommunications company
SES sole ownership. DPC was later renamed to ASTRA Platform Services GmbH (APS), and in April 2012 to SES Platform Services. In February 2016, it was announced
SES_Platform_Services
Ultra wide-angle rectilinear camera zoom lens
rectilinear zoom lens made by Sigma Corporation specifically for use with APS-C small format digital SLRs. It is the first ultrawide rectilinear (non-fisheye
Sigma 8-16mm f/4.5-5.6 DC HSM lens
Sigma_8-16mm_f/4.5-5.6_DC_HSM_lens
Submarine of the United States
USS Argonaut (V-4/SF-7/SM-1/A-1/APS-1/SS-166) was a submarine of the United States Navy, the first boat to carry the name. Argonaut was laid down as V-4
USS_Argonaut_(SM-1)
Award of the American Physical Society
a prize that has been awarded annually by the American Physical Society (APS) since 1979. The recipient is chosen for "outstanding achievement in fluid
Fluid_Dynamics_Prize_(APS)
Bulgarian electoral coalition
(Bulgarian: Алианс за права и свободи, АПС, romanized: Alians za prava i svobodi, APS; Turkish: Hak ve Özgürlükler İttifakı) formerly DPS–Dogan, DPS–DPS or the
Alliance for Rights and Freedoms
Alliance_for_Rights_and_Freedoms
2006 on 150 Years of the Field Post Office The Army Postal Service Corps (APS) functions as a government-operated military mail system in India. A primary
Army_Postal_Service_(India)
Greek athletic club
A.P.S. Aspida Xanthi (Athletic and Cultural Club Aspida Xanthi) is an athletic club in the city of Xanthi, Greece. It was founded in 1922. It maintains
A.P.S._Aspida_Xanthi
The American Pediatric Society (APS) is the first pediatric society established in North America. Created in 1887, the APS pursues a vision of an engaged
American_Pediatric_Society
Image created by light falling on a light-sensitive surface
panoramic photos have been available on the Advanced Photo System (APS) film. APS was developed by several of the major film manufacturers to provide
Photograph
Proportion of income which is saved
In Keynesian economics, the average propensity to save (APS), also known as the savings ratio, is the proportion of income which is saved, usually expressed
Average_propensity_to_save
School district in New Mexico, US
Albuquerque Public Schools (APS) is a school district based in Albuquerque, New Mexico. Founded in 1891, APS is the largest of 89 public school districts
Albuquerque_Public_Schools
Type of military anti-projectile defense system
An active protection system (APS) is a system designed to actively prevent certain anti-tank weapons from destroying a vehicle. Countermeasures that either
Active_protection_system
Mirrorless camera lens mount
The RF mount was announced in September 2018. In May 2022, Canon announced APS-C EOS R cameras (the EOS R10 and EOS R7) and RF-S lenses designed for these
Canon_RF_lens_mount
Award is an award of the Association for Psychological Science which "honors APS Members for their lifetime of significant intellectual contributions to the
William_James_Fellow_Award
mount. It will mount on all current Canon DSLR bodies with APS-C sensors, as well as older APS-C bodies dating to the 2003 introduction of the EF-S mount
Canon_EF_24mm_lens
Digital camera lens mount
security on the mounted lens. For its two sensor sizes, FX (Full-frame) and DX (APS-C), Nikon develops two varieties of lens. The two versions both use the Z-mount
Nikon_Z-mount
2009 event
Several teachers and principals in the Atlanta Public Schools (APS) district cheated on state-administered standardized tests in 2009. The scandal was
Atlanta Public Schools cheating scandal
Atlanta_Public_Schools_cheating_scandal
Wide-angle photographic lens with strong barrel distortion
makes a 10.5 mm fisheye for their APS DX SLRs. Several other companies make "full frame", i.e. diagonal, fisheyes for APS and m43 cameras, see next paragraph
Fisheye_lens
American professor of physics emeritus at University of Florida
1016/0550-3213(78)90015-9. "INSPIREHEP". Retrieved November 19, 2021. "APS Fellow Archive". APS. Retrieved November 19, 2021. Scholia has an author profile for
Richard_D._Field
LaTeX macro collection
APS to support its authors in the editorial process and to facilitate the production of APS journals. Subsequent to REVTeX's original release and APS’
REVTeX
Academic journal
Palermo (University of Washington). The journal was established in 1992 as the APS Journal and was renamed Pain Forum in 1995 before obtaining its current name
The_Journal_of_Pain
2022 APS-C mirrorless compact cinema camera
The Sony FX30 (ILME-FX30) is Sony's first semi-professional APS-C mirrorless interchangeable-lens cinema camera in their Cinema Line. It was announced
Sony_FX30
2014-10-30. Retrieved 2025-09-24. "Sony E PZ 16-50mm F3.5-5.6 OSS II - Compact APS-C standard power zoom lens with Optical SteadyShot | SELP16502". electronics
List_of_Sony_E-mount_lenses
Terrorist attack in Peshawar, Pakistan
Archived from the original on 19 October 2018. Retrieved 18 October 2018. "APS carnage: Khatak announces increase in compensation". Archived from the original
2014_Peshawar_school_massacre
2022 APS-C mirrorless interchangeable-lens camera
Z30 is an APS-C mirrorless camera (1.5x APS Crop) announced by Nikon on June 29, 2022. It is the ninth Z-mount camera body and the third APS-C Z-mount
Nikon_Z30
Digital camera lens mount model
lens mount created for some Canon digital single-lens reflex cameras with APS-C sized image sensors. It was released in 2003. Cameras with the EF-S mount
Canon_EF-S_lens_mount
Football club
Wikipedia published under the GFDL. Thyella ("Storm") (Greek: Α.Π.Σ. Θύελλα A.P.S. Thyella) is a football club based in the city of Patras, Greece. It was
Thyella_Patras_F.C.
Academic journal
April and November, independent essays sent to the APS by outside scholars, and biographical memoirs of APS Members. Timothy L. Grove (9 January 2010). "Published
Proceedings of the American Philosophical Society
Proceedings_of_the_American_Philosophical_Society
Paramilitary security organization
The Administration Police Service (APS; Swahili: Polisi wa Utawala Kenya) is a paramilitary security organization and is a branch of the Republic of Kenya's
Administration_Police
Star in the constellation Apus
Bayer designation that is Latinized from α Apodis, and abbreviated Alpha Aps or α Aps, respectively. The star has an apparent visual magnitude of approximately
Alpha_Apodis
Award for undergraduate physicists
a prize that has been awarded annually by the American Physical Society (APS) since 1978, named after the experimental physicist LeRoy Apker. The recipients
LeRoy_Apker_Award
Tail warning radar for bombers in World War II
UHF). The system was also used by the US Army Air Forces, under the name AN/APS-13, and the nickname Archie. Monica was developed at the Bomber Support Development
Monica_(radar)
2019 APS-C digital single-lens reflex camera
same as the Canon EOS 80D, which it replaces. The camera is one of Canon's APS-C cameras part of the Canon EOS two-digit line, it is the successor to the
Canon_EOS_90D
Autofocus system camera product line
at least one new camera release each year. All EOS cameras used 35 mm or APS-format film until Canon introduced the EOS D30, the company's first in-house
Canon_EOS
2022 APS-C mirrorless camera
The Canon EOS R7 is a high-end semi-professional APS-C mirrorless interchangeable-lens camera produced by Canon. The camera was announced by Canon on
Canon_EOS_R7
Statutory agency
to meet future needs and sustainability of the Australian Public Service (APS), that comprises approximately 160,000 people, or 0.8% of the Australian
Australian Public Service Commission
Australian_Public_Service_Commission
American biannual physics prize
Pipkin Award is a physics prize given by the American Physical Society (APS) every two years since 1999. The award was established in 1997 by the American
Francis_M._Pipkin_Award
Point-and-shoot camera line (2000–2017)
cameras, originally based on the design of Canon's IXUS/IXY/ELPH line of APS cameras. Canon's PowerShot A and S line of the time[when?] were being made
Canon_Digital_IXUS
Canon SLR EF mount prime lens
family also includes one EF-S lens that only mounts on Canon bodies with APS-C sensors. Focal lengths at 35mm or less are considered wide angle on 135
Canon_EF_35mm_lens
APS
APS
Girl/Female
Tamil
Parnitha | பரà¯à®¨à®¿à®¤à®¾
Auspicious Apsara
Parnitha | பரà¯à®¨à®¿à®¤à®¾
Male
Babylonian
, god of the "watery deep."
Girl/Female
Tamil
Peaceful, An Apsara or celestial nymph
Girl/Female
Tamil
Charming, Infatuating, Beautiful, An Apsara or celestial nymph, An Apsara or celestial nymph
Male
German
German form of Hebrew Abiyshalowm, APSEL means "father of peace."Â
Girl/Female
Tamil
Apsara, Dance
Girl/Female
Tamil
Celestial dancer or An Apsara or shakuntalas mother
Girl/Female
Tamil
Celestial maiden, Nymph
Girl/Female
Tamil
Apsara
Girl/Female
Tamil
Celestial dancer or An Apsara or shakuntalas mother
Girl/Female
Tamil
Parnita | பரà¯à®¨à®¿à®¤à®¾
Auspicious Apsara
Parnita | பரà¯à®¨à®¿à®¤à®¾
Girl/Female
Tamil
Apsara, Of the clove plant
Surname or Lastname
English
English : of uncertain derivation; perhaps a variant of Apsley, a habitational name from a place named Apsley or Aspley (in Bedfordshire), from Old English æspe, æpse ‘aspen’ + lēah ‘woodland clearing’.
Girl/Female
Tamil
Mirakeshi | மீராகேஷீ
Name of a Apsara fairy
Mirakeshi | மீராகேஷீ
Boy/Male
Hindu
Girl/Female
Tamil
Auspicious Apsara
Girl/Female
Tamil
Pleasant, Wonderful, Happy or full of laughter, Smile, An Apsara or celestial nymph
Girl/Female
Tamil
Pleasant, Wonderful, Happy or full of laughter, Smile, An Apsara or celestial nymph
Girl/Female
Tamil
Tolerant, The earth, An Apsara or celestial nymph
Girl/Female
Tamil
Nrity | நà¯à®°à¯€à®¤à¯à®¯Â
Apsara, Dance
APS
APS
Girl/Female
Sikh
Trust, Belief, Lord Shiva
Girl/Female
Hindu, Indian
Understood
Girl/Female
Gaelic American Greek
White shoulder. From Fionnghuala or Fionnuala.
Boy/Male
Tamil
Eminent
Boy/Male
Muslim/Islamic
God's gift
Boy/Male
Muslim/Islamic
Servant of the Sublime One
Female
Hindi/Indian
(कà¥à¤‚ती) Hindi myth name of the mother of Karna, KUNTI means "to call, to invoke, to pray."
Female
English
Anglicized form of Irish Gaelic Meadhbh, MAEV means "intoxicating."
Girl/Female
Muslim
Distinction, Eminence, Excel
Girl/Female
Tamil
Same as Cauvery name of a river
APS
APS
APS
APS
APS
v. i.
To go back; to retrograde, as the apsis of a planet's orbit.
pl.
of Apsis
n.
A reliquary, or case in which the relics of saints were kept.
n.
Any extension of a church behind the high altar, as a chapel; also, in an apsidal church, all the space beyond the line of the back or eastern face of the altar.
adv.
Before the /apse of a long time; soon; -- usually separated, ere long.
n. pl.
See Apsis.
n.
A projecting part of a building, esp. of a church, having in the plan a polygonal or semicircular termination, and, most often, projecting from the east end. In early churches the Eastern apse was occupied by seats for the bishop and clergy.
n.
In a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum.
n.
Same as Apse.
a.
Of or pertaining to the apse of a church; as, the apsidal termination of the chancel.
a.
Of or pertaining to the apsides of an orbit.
n.
A roof or ceiling covering a semicircular room or recess, or one of nearly that shape, as the apse of a church, a niche, or the like. It is approximately the quarter of a hollow sphere.
n.
See Apsis.
n.
The bishop's seat or throne, in ancient churches.
n.
The plain semidome of an apse; sometimes used for the entire apse.
n.
One of the two points of an orbit, as of a planet or satellite, which are at the greatest and least distance from the central body, corresponding to the aphelion and perihelion of a planet, or to the apogee and perigee of the moon. The more distant is called the higher apsis; the other, the lower apsis; and the line joining them, the line of apsides.