apsis

[Ap·sis]

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

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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.

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


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.

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

n.
Same as Apse.


Apsis

Ap"sis , n.; pl. Apsides . See Apse. [L. apsis, absis, Gr. , , a tying, fastening, the hoop of a wheel, the wheel, a bow, arch, vault, fr. to fasten.] 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 co'94rdinates, any point for which the radius vector is a maximum or minimum. 3. (Arch.) Same as Apse.

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.

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Usage Examples
Misspelled Form

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