Thesaurus: apsis

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Definitions

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.
2. n. In a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum.
3. n. Same as Apse.
4. n. a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar
5. 1. (Astron.) 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. (Math.) In a curve referred to polar coördinates, any point for which the radius vector is a maximum or minimum. 3. (Arch.) Same as Apse.
6. 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 theapogee and perigee of the moon. The more distant is called the higherapsis; the other, the lower apsis; and the line joining them, theline of apsides.
7. n a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar