periapsis
English Thesaurus
1. (astronomy) the point in an orbit closest to the body being orbited (noun.location)
| hypernym | : | celestial point, |
| definition | : | a point in the heavens (on the celestial sphere) (noun.location) |
| hyponym | : | perigee, |
| definition | : | periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth (noun.location) |
| hyponym | : | perihelion, |
| definition | : | periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun (noun.location) |
| hyponym | : | perijove, |
| definition | : | periapsis in orbit around Jupiter (noun.location) |
| hyponym | : | perilune, periselene, |
| definition | : | periapsis in orbit around the moon (noun.location) |
| part meronym | : | celestial orbit, orbit, |
| definition | : | the (usually elliptical) path described by one celestial body in its revolution about another (noun.location) |
| domain category | : | astronomy, uranology, |
| definition | : | the branch of physics that studies celestial bodies and the universe as a whole (noun.cognition) |
| antonym | : | apoapsis, point of apoapsis, |
| definition | : | (astronomy) the point in an orbit farthest from the body being orbited (noun.location) |
| antonym | : | apoapsis, point of apoapsis, |
| definition | : | (astronomy) the point in an orbit farthest from the body being orbited (noun.location) |
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