• (noun): A unit of time corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks.
  • (noun): One of the 12 divisions of a year as determined by a calendar, especially the Gregorian calendar. Also called calendar month.
  • (noun): A period extending from a date in one calendar month to the corresponding date in the following month.
  • (noun): A sidereal month.
  • (noun): A lunar month.
  • (noun): A solar month.
  • (idiom): month of Sundays Informal An indefinitely long period of time: It will take you a month of Sundays to chop all that wood.

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Wordnet definitions

  • (noun): a time unit of approximately 30 days; "he was given a month to pay the bill"
  • (noun): one of the twelve divisions of the calendar year; "he paid the bill last month"

Look up "month" to find its meanings and associations with other words and concepts


A month is a unit of time, used with calendars, which is approximately as long as a natural period related to the motion of the Moon; month and Moon are cognates. The traditional concept arose with the cycle of Moon phases; such months (lunations) are synodic months and last approximately 29.53 days. From excavated tally sticks, researchers have deduced that people counted days in relation to the Moon's phases as early as the Paleolithic age. Synodic months, based on the Moon's orbital period with respect to the Earth-Sun line, are still the basis of many calendars today, and are used to divide the year.

Example Sentences

  • • British dead and wounded in Afghanistan, month by month• Get the Afghan civilian casualties data

  • I sent an email to the library, explaining that I had had some books for about 5 months now - the first month, 3 renewals and now it was a month+ over-due March, 20, actually - but could I please keep them until June?

  • That doesn't count all the permanent population on Council Tax assistance (the junior printer at my last job, who lived in a council flat (rent: £10 a month) with his girlfriend and baby paid only £20 a month*), and other benefits.

  • The presidential office and the ruling Grand National Party have agreed to open a parliamentary session late this month to deliberate bills that failed to pass in last month� extra National Assembly session.

  • How It Works The script gets the value for variable $month by tapping into one of PHP's numerous built-in date func - tions; date ( "n") returns a value equal to the numerical equivalent of the month as set in your server, such as 1 for January, 2 for February, and so on.

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