• 1. one of the twelve divisions ( calendar months ) of the calendar year
• 2. a period of time extending from one date to a corresponding date in the next calendar month
• 3. a period of four weeks or of 30 days
• 4. the period of time ( tropical month ) taken by the moon to return to the same longitude after one complete revolution around the earth; 27.321 58 days (approximately 27 days, 7 hours, 43 minutes, 4.5 seconds)
• 5. the period of time ( sidereal month ) taken by the moon to make one complete...

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