periapsis
English
Etymology
Noun
periapsis (plural periapsides)
- (astronomy) The point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its minimum.
Usage notes
In the case of some particular celestial bodies, specialised terms are used.
Synonyms
Antonyms
Related terms
- periareion
- periastron
- peribothron
- pericenter, pericentre
- pericynthion, pericytherion
- perigalacticon
- perigee
- perihelion
- perihermion
- perijove
- perikrone, perikron
- perilune
- perimelasma
- perinigricon
- periposeidon
- perisaturnium
- periselene
Translations
Translations
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See also
Finnish
Pronunciation
Noun
periapsis
Declension
Inflection of periapsis (Kotus type 39/vastaus, no gradation) | ||||
---|---|---|---|---|
nominative | periapsis | periapsikset | ||
genitive | periapsiksen | periapsisten periapsiksien | ||
partitive | periapsista | periapsiksia | ||
illative | periapsikseen | periapsiksiin | ||
singular | plural | |||
nominative | periapsis | periapsikset | ||
accusative | nom. | periapsis | periapsikset | |
gen. | periapsiksen | |||
genitive | periapsiksen | periapsisten periapsiksien | ||
partitive | periapsista | periapsiksia | ||
inessive | periapsiksessa | periapsiksissa | ||
elative | periapsiksesta | periapsiksista | ||
illative | periapsikseen | periapsiksiin | ||
adessive | periapsiksella | periapsiksilla | ||
ablative | periapsikselta | periapsiksilta | ||
allative | periapsikselle | periapsiksille | ||
essive | periapsiksena | periapsiksina | ||
translative | periapsikseksi | periapsiksiksi | ||
abessive | periapsiksetta | periapsiksitta | ||
instructive | — | periapsiksin | ||
comitative | See the possessive forms below. |