APSIS
\ˈapsɪs], \ˈapsɪs], \ˈa_p_s_ɪ_s]\
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In a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum.
By Oddity Software
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In a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum.
By Noah Webster.
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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:-pl. APSIDES.
By Daniel Lyons
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The two points in the orbits of planets in which they are at the greatest and at the least distance from the sun or the earth; apse, in a church, the rounded end of a basilica at the back of the altar; the arched roof of a room.
By Stormonth, James, Phelp, P. H.
Nearby Words
- apselaphesia, apselaphesis
- apsidal
- apsides
- apsinthiatum
- apsinthites
- apsis
- a (, n. the state of being a [r.] de quincey.
- a (a) a shed for housing an airship or a (b) a ground or field, esp. one equipped with housing and other facilities, used for flying purposes. -- a` (#), a.
- a 1. the act of combining air with another substance, or the state of being filled with air.
- a 1. to infuse air into; to combine air with.
- a a club or association of persons interested in a