English

Definition of lunar cycle noun from the Oxford Advanced Learner's Dictionary

 

lunar cycle

 noun
noun
BrE BrE//ˌluːnə ˈsaɪkl//
 
; NAmE NAmE//ˌluːnər ˈsaɪkl//
 
(astronomy)
 
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a period of 19 years, after which the new moon and full moon return to the same day of the year
See the Oxford Advanced American Dictionary entry: lunar cycle