Old English monað, from Proto-Germanic *menoth- (cf. Old Saxon manoth, Old Frisian monath, Middle Dutch manet, Dutch maand, Old High German manod, German Monat, Old Norse manaðr, Gothic menoþs "month"), related to *menon- "moon" (see moon (n.); the month was calculated from lunar phases). Its cognates mean only "month" in the Romance languages, but in Germanic generally continue to do double duty. Phrase a month of Sundays "a very long time" is from 1832 (roughly 7 and a half months, but never used literally).
|lunar month |
The average time between successive occurrences of the same phase of the Moon, equal to approximately 29 days, 12 hours, 44 minutes. Depending on the lunar calendar being used, a lunar month can begin with the new moon or the full moon. Also called lunation, synodic month. ◇ A period of 12 lunar months is a lunar year.