Word.ws English Dictionary

periselenium

periselenium noun: the point of a body's elliptical orbit about the moon's centre of mass where the distance between the body and the centre of mass is at its minimum.

Noun

periselenium (uncountable)

  1. The point of a body's elliptical orbit about the moon's centre of mass where the distance between the body and the centre of mass is at its minimum.
    • Hence, the Earth gravity allows the decrease of the particle energy from zero to a negative value and its capture by the moon to an elliptical orbit, e.g., with a periselenium of ~2,000 km and a high aposelenium of ~70,000h km.2004, Science and Technology Series, volume 108, American Astronautical Society, page 162
    Synonyms:
    periselene

Synonyms of periselenium

Antonyms

Origin of periselenium

From peri- + seleno- + -ium, Latin form of -ion.

Questions about periselenium

What does periselenium mean?
Periselenium means the point of a body's elliptical orbit about the moon's centre of mass where the distance between the body and the centre of mass is at its minimum.
What part of speech is periselenium?
Periselenium is a noun.

Words near periselenium in the dictionary

  1. periscopism
  2. periseasonal
  3. periselectivities
  4. periselectivity
  5. periselene
  6. periselenium
  7. periseptal
  8. perisex
  9. perisexual
  10. perish
  11. perish the thought

Source and license

Adapted from Wiktionary: periselenium (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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