Definitions for apsis
ˈæp sɪs; -sɪˌdizap·sis

Princeton's WordNetRate this definition:0.0 / 0 votes

1. apse, apsisnoun

   a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar

WiktionaryRate this definition:0.0 / 0 votes

1. apsisnoun

   A recess or projection, with a dome or vault, at the east end of a church; an apse.

2. apsisnoun

   Either of the points in the elliptical orbit of a planet or comet where it is closest or furthest from the sun; perihelion or aphelion; an apside

3. Etymology: Via apsis, from ἁψίς. See also apse.

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. APSISnoun

   apsides, plural. Is applied, in astronomy, to two points in the orbits of planets, in which they are at the greatest, and the least distance from the sun or earth. The higher apsis is more particularly denominated aphelion, or apogee; the lower, perihelion, or perigee. Ephraim Chambers

   Etymology: ἀψίς.

   If bodies revolve in orbits that are pretty near circles, and the apsides of these orbits be fixed, then the centripetal forces of those bodies will be reciprocally as the squares of the distances. George Cheyne, Philosophical Principles.

WikipediaRate this definition:0.0 / 0 votes

1. Apsis

   An apsis (from Ancient Greek ἁψίς (hapsís) 'arch, vault'; pl. apsides AP-sih-deez) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Sun are called the aphelion and perihelion.

ChatGPTRate this definition:0.0 / 0 votes

1. apsis

   Apsis refers to points in the orbit of a celestial body where it is the closest or the farthest from its orbital focus, typically the centre of mass of a system. The two points are designated as the periapsis (the nearest point) and the apoapsis (the farthest point). The terms are often modified to refer to specific celestial bodies, such as perihelion and aphelion for orbits around the sun, or perigee and apogee for orbits around the Earth.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Apsisnoun

   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

2. Apsisnoun

   in a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum

3. Apsisnoun

   same as Apse

4. Etymology: [L. apsis, absis, Gr. "apsi`s, "apsi^dos, a tying, fastening, the hoop of a wheel, the wheel, a bow, arch, vault, fr. "a`ptein to fasten.]

WikidataRate this definition:0.0 / 0 votes

1. Apsis

   An apsis, plural apsides, is the point of greatest or least distance of a body from one of the foci of its elliptical orbit. In modern celestial mechanics this focus is also the center of attraction, which is usually the center of mass of the system. Historically, in geocentric systems, apsides were measured from the center of the Earth. The point of closest approach is called the periapsis or pericentre, from Greek περί, peri, around, and κέντρον, kentron, centre. The point of farthest excursion is called the apoapsis, apocentre or apapsis. A straight line drawn through the periapsis and apoapsis is the line of apsides. This is the major axis of the ellipse, the line through the longest part of the ellipse. Derivative terms are used to identify the body being orbited. The most common, for closest and farthest points, respectively, are perigee and apogee, referring to orbits around the Earth, and perihelion and aphelion, referring to orbits around the Sun. During the Apollo program, the terms pericynthion and apocynthion were used when referring to the Moon.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Apsis

   ap′sis, n. one of the two extreme points in the orbit of a planet, one at the greatest, the other at the least distance from the sun: one of the two points in the orbit of a satellite—one nearest to, the other farthest from, its primary; corresponding, in the case of the moon, to the perigee and apogee:—pl. Apsides (ap′si-dēz).—adj. Ap′sidal. [L. apsis—Gr. hapsis, a connection, an arch—hapt-ein, to connect. See Apt.]

Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. apsis

   Either of the two points in planetary orbits where they are at the greatest and the least distance from the sun, and are termed higher or lower accordingly. The two are joined by a diameter called the line of the apsides.

Matched Categories

1. • Recess

Usage in printed sourcesFrom: 

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Anagrams for apsis »

1. aspis

How to pronounce apsis?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say apsis in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of apsis in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of apsis in Pythagorean Numerology is: 1

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=apsis
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Apsis
3. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=apsis
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Apsis
5. ^ ChatGPT
   https://chat.openai.com
6. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/apsis
7. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=apsis
8. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=apsis
9. ^ Dictionary of Nautical Terms
   https://www.gutenberg.org/cache/epub/26000/pg26000-images.html#:~:text=apsis
10. ^ Usage in printed sources
    https://books.google.com/ngrams/graph?content=apsis