PERIAPSIS

periapsis, point of periapsis

(noun) (astronomy) the point in an orbit closest to the body being orbited

Source: WordNet® 3.1


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

• pericenter

Antonyms

• apoapsis

Source: Wiktionary



RESET




Word of the Day

9 May 2025

RIGHT

(noun) anything in accord with principles of justice; “he feels he is in the right”; “the rightfulness of his claim”


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Coffee Trivia

In 1511, leaders in Mecca believed coffee stimulated radical thinking and outlawed the drink. In 1524, the leaders overturned that order, and people could drink coffee again.

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