Standard Lemma guide

lunation

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /luːˈneɪʃən/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -eɪʃən

1

noun

Meaning 1

A month of an average of approximately 29.53 days, measured from a lunar phase until the return of that same phase.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The irregular period from one new moon until the next.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

the period between successive new moons (29.531 days)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: lunar month, moon, synodic month

Antonyms: none provided

Broader terms: month

History

Etymology

Borrowed from Medieval Latin lūnātiō.

Across languages

Translations

15 source translations are retained for this English entry.

  • Bulgarian: лунен месец (lunen mesec) — a month measured from a lunar phase until the return of that same phase
  • Dutch: lunatie — a month measured from a lunar phase until the return of that same phase
  • Dutch: synodische maand — a month measured from a lunar phase until the return of that same phase
  • Galician: lunación — a month measured from a lunar phase until the return of that same phase
  • Polish: lunacja — a month measured from a lunar phase until the return of that same phase
  • Portuguese: lunação — a month measured from a lunar phase until the return of that same phase
  • Russian: лу́нный ме́сяц (lúnnyj mésjac) — a month measured from a lunar phase until the return of that same phase
  • Russian: лунация (lunacija) — a month measured from a lunar phase until the return of that same phase
  • Swedish: månmånad — a month measured from a lunar phase until the return of that same phase
  • Tày: bươn — a month measured from a lunar phase until the return of that same phase
  • Vietnamese: tuần trăng — a month measured from a lunar phase until the return of that same phase
  • Polish: lunacja — the name of term given the irregular period from one new moon until the next
  • Portuguese: lunação — the name of term given the irregular period from one new moon until the next
  • Russian: лу́нный ме́сяц (lúnnyj mésjac) — the name of term given the irregular period from one new moon until the next
  • Russian: лунация (lunacija) — the name of term given the irregular period from one new moon until the next