Definition of apsis
English to English noun - a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar
source: WordNet 3.0 - 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.
source: Webster 1913
Visual Synonyms 
Nearby Word
apsis, apis, aphesis, apios, aphis, absis, apish, apoapsis, apices, apoise, apophysis, apophasis, abscise, aphasia, avis, apsu, apus, absciss, apieces, aphasic
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