Noun | 1. | ![]() period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period" calendar week, week - a period of seven consecutive days starting on Sunday date - the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred; "he tried to memorizes all the dates for his history class" Revolutionary calendar month - a month in the Revolutionary calendar Gregorian calendar month - a month in the Gregorian calendar Jewish calendar month - a month in the Jewish calendar Islamic calendar month - any lunar month in the Muslim calendar Hindu calendar month - any lunisolar month in the Hindu calendar |
2. | month - a time unit of approximately 30 days; "he was given a month to pay the bill" time unit, unit of time - a unit for measuring time periods year - the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days" new moon, new phase of the moon - the time at which the Moon appears as a narrow waxing crescent half-moon - the time at which the Moon is at first or last quarter when half its face is illuminated full, full moon, full phase of the moon, full-of-the-moon - the time when the Moon is fully illuminated; "the moon is at the full" anomalistic month - period between successive perigees; approximately 27.5546 days sidereal month - period between successive conjunctions with a star, 27.322 days solar month - one-twelfth of a solar or tropical year |