lunar month

[ loo-ner muhnth ]

noun

1. month ( def 5 ).

lunar month

noun

1. another name for synodic month See month

lunar month

1. 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.
2. Also called lunation synodic month
3. ◆ A period of 12 lunar months is a lunar year .

Word History and Origins

Origin of lunar month¹

First recorded in 1585–95