periapsis

Fetched 2026-10-26 (cache).

Synonyms: periapses, periapse, parapsis, periapts, percopsis

Antonyms: periapses, periapse, parapsis, periapts, percopsis

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|astronomy|astrophysics}} The [[point]] of a [[body]]'s ([[elliptical]]) [[orbit]] in a 2-body gravitational [[system]] such that the [[distance]] between the two bodies (measured from their respective centres of mass) is at its [[minimum]].
2. The minimum [[distance]] between the two bodies in such a system.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.