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Definition of Apsis
1. Noun. A domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar.
Group relationships: Church, Church Building
Generic synonyms: Niche, Recess
Specialized synonyms: Tribune
Derivative terms: Apsidal
Definition of Apsis
1. 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.
Definition of Apsis
1. Noun. (architecture) A recess or projection, with a dome or vault, at the east end of a church; an apse. ¹
2. Noun. (astronomy) 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 ¹
¹ Source: wiktionary.com
Definition of Apsis
1. an apse [n -SIDES] - See also: apse
Medical Definition of Apsis
1.
Origin: L. Apsis, absis, Gr, a tying, fastening, the hoop of a wheel, the wheel, a bow, arch, vault, fr. To fasten.
1.