periapsis

English

Etymology

peri- +‎ apsis

Noun

periapsis (plural periapsides)

  1. (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

Translations
Translations

See also

Finnish

Pronunciation
  • IPA(key): /ˈperiɑpsis/, [ˈpe̞riɑps̠is̠]
  • Hyphenation: pe‧ri‧ap‧sis

Noun

periapsis

  1. (astronomy) 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
instructive — periapsiksin
abessive periapsiksetta periapsiksitta
comitative — periapsiksineen
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