- The definition of a month is any of the twelve parts of the calendar year.
An example of a month is January.
- any of the main parts (usually twelve) into which the calendar year is dividedalso calendar month
- the time from any date of one month to the corresponding date of the next
- a period of four weeks or 30 days
- the period of a complete revolution of the moon around the earth with respect to some object; esp.,
- the period () marked by two successive lunar conjunctions with the sun, equal on the average to 29.53 days: also called lunar month
- the sidereal month
- one twelfth of the solar yearin full solar month
Origin of monthMiddle English ; from Old English monath, akin to German monat, Old Norse manuthr ; from Germanic an unverified form menōth- ; from Indo-European an unverified form mēnōt, month, moon, variant, variety of mēn: see moon
month after month
month by month
month in, month out
month of Sundays
- A unit of time corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks.
- One of the 12 divisions of a year as determined by a calendar, especially the Gregorian calendar. Also called calendar month.
- A period extending from a date in one calendar month to the corresponding date in the following month.
- A sidereal month.
- A lunar month.
- A solar month.
Origin of monthMiddle English moneth, from Old English mōnath; see mē-2 in Indo-European roots. Usage Note: The singular noun month, preceded by a number and a hyphen, is used as a compound adjective: a three-month vacation. The plural possessive form without a hyphen is also standard: a three months' vacation.
(plural months) The plural is occasionally seen as month (unchanged)
- A period into which a year is divided, historically based on the phases of the moon. In the Gregorian calendar there are twelve months: January, February, March, April, May, June, July, August, September, October, November and December.
- July is my favourite month.
- A period of 30 days, 31 days, or some alternation thereof.
- We went on holiday for two months.
- month of Sundays
- time of the month
From Middle English month, moneth, from Old English mÅnaÃ° (â€œmonthâ€), from Proto-Germanic *mÄ“nÅÃ¾s (â€œmonthâ€), from Proto-Indo-European *má¸—hâ‚nÌ¥s (â€œmoon, monthâ€), probably from Proto-Indo-European *mÃª- (â€œto measureâ€), referring to the moon's phases as the measure of time, equivalent to moon +â€Ž -th. Cognate with Scots moneth (â€œmonthâ€); North Frisian muunt (â€œmonthâ€); Saterland Frisian Mound (â€œmonthâ€), Dutch maand (â€œmonthâ€); German Low German Maand, Monat (â€œmonthâ€); German Monat (â€œmonthâ€); Danish mÃ¥ned (â€œmonthâ€); Swedish mÃ¥nad (â€œmonthâ€); Icelandic mÃ¡nuÃ°i (â€œmonthâ€); Latin mÄ“nsis (â€œmonthâ€); Ancient Greek Î¼Î®Î½ (má¸—n); Armenian Õ¡Õ´Õ«Õ½ (amis); Old Irish mÃ; Old Church Slavonic Ð¼Ñ£ÑÑ§Ñ†ÑŒ (mÄ›sÄ™cÄ). See also moon.