From Medieval Latin lūnātiō.
- IPA(key): /luːˈneɪʃən/
- Rhymes: -eɪʃən
- Hyphenation: lu‧na‧tion
lunation (plural lunations)
- A month of an average of approximately 29.53 days, measured from a lunar phase until the return of that same phase.
1357, John Mandeville, The Travels of Sir John Mandeville[1], modernized spelling edition:And there is not the moon seen in all the lunation, save only the second quarter.
- The irregular period from one new moon until the next.
a month measured from a lunar phase until the return of that same phase
the name of term given the irregular period from one new moon until the next