1. (noun) the lunar calendar used by Muslims; dates from 622 AD (the year of the Hegira); the beginning of the Muslim year retrogresses through the solar year completing the cycle every 32 years

• islamic calendar
• mohammedan calendar
• muhammadan calendar
• muslim calendar

1. (noun) the lunar calendar used by Muslims; dates from 622 AD (the year of the Hegira); the beginning of the Muslim year retrogresses through the solar year completing the cycle every 32 years

• lunar calendar