- The average period of revolution of the moon with respect to the stars. It equals 27 days 43 min 11.5 s, or approximately 271/3 days.Sidereal month.
Aviation dictionary. 2014.
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sidereal month — n. the time required for the moon to complete one revolution around the earth with respect to a fixed star: its average value is 27.32 days of mean solar time … English World dictionary
sidereal month — noun period between successive conjunctions with a star, 27.322 days • Hypernyms: ↑month, ↑sidereal time … Useful english dictionary
sidereal month — side′real month′ n. astron. month • Etymology: 1865–70 … From formal English to slang
sidereal month — Astron. See under month (def. 5). [1865 70] * * * … Universalium
sidereal month — A month as determined by changes in the position of the moon relative to certain stars. Guaranty Trust & S.D. Co. v Buddington, 27 Fla 215, 9 So 246 … Ballentine's law dictionary
sidereal month — noun Date: 1868 the mean time of the moon s revolution in its orbit with reference to a star s position ; 27 days, 7 hours, 43 minutes, 11.5 seconds of mean time … New Collegiate Dictionary
Sidereal time — is a measure of the position of the Earth in its rotation around its axis, or time measured by the apparent diurnal motion of the vernal equinox, which is very close to, but not identical to, the motion of stars. They differ by the precession of… … Wikipedia
month — [munth] n. [ME < OE monath, akin to Ger monat, ON manuthr < Gmc * menōth < IE * mēnōt, month, moon, var. of mēn: see MOON] 1. any of the main parts (usually twelve) into which the calendar year is divided: also calendar month 2. a) the… … English World dictionary
Month — For the Egyptian hawk god, see Monthu. A month is a unit of time, used with calendars, which was first used and invented in Mesopotamia, as a natural period related to the motion of the Moon; month and Moon are cognates. The traditional concept… … Wikipedia
month — /munth/, n. 1. Also called calendar month. any of the twelve parts, as January or February, into which the calendar year is divided. 2. the time from any day of one calendar month to the corresponding day of the next. 3. a period of four weeks or … Universalium