periapsis

Other forms of periapsis

plural

periapsises·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about periapsis

What does periapsis mean?

periapsis means "(astronomy) the point in an orbit closest to the body being orbited".

How many syllables are in periapsis?

periapsis has 4 syllables and divides as pe-ri-ap-sis under the regular spelling rules. It is not in the CMU Pronouncing Dictionary, so that comes from how the word is written rather than from a recorded pronunciation, and no stress or phonetic transcription is claimed for it.

What is another word for periapsis?

Close synonyms include point of periapsis. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

What is the opposite of periapsis?

The recorded antonyms are apoapsis.

Is periapsis a common word?

periapsis is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.