Definition of lunar month in English:

lunar month

Syllabification: lu·nar month


  • 1A month measured between successive new moons (roughly 29 1/ 2 days).
    More example sentences
    • Each lunar month starts on the day of the new moon.
    • It is the vital data from which the calendrical relationships between sun and moon cycles may be understood - and therefore the most important piece of numerical data after the number of days in a lunar month and the length of the solar year.
    • An intercalary month was added every three years to allow for the fact that a solar year has 365.2422 days while 12 lunar months of 29.5306 days contains 354.3672 days.
  • 1.1(In general use) a period of four weeks.
    More example sentences
    • I've always wondered, but assumed it was because one week is a quarter of a lunar month.
    • A normal full-term pregnancy lasts 40 weeks or 10 lunar months.

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Pronunciation: ˌastrəˈgāSHən
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