From Longman Dictionary of Contemporary Englishcalendar monthˌcalendar ˈmonth noun [countable] 1 TMCone of the 12 months of the year Salaries will be paid at the end of the calendar month.2 TMCa period of time from a specific date in one month to the same date in the next month
Examples from the Corpus
calendar month• Be sure to apply before the first of the calendar month when you want the rebate to start. 