Mean time
Mean Mean, a. [OE. mene, OF. meiien, F. moyen, fr. L. medianus that is in the middle, fr. medius; akin to E. mid. See {Mid}.] 1. Occupying a middle position; middle; being about midway between extremes. [1913 Webster]

Being of middle age and a mean stature. --Sir. P. Sidney. [1913 Webster]

2. Intermediate in excellence of any kind. [1913 Webster]

According to the fittest style of lofty, mean, or lowly. --Milton. [1913 Webster]

3. (Math.) Average; having an intermediate value between two extremes, or between the several successive values of a variable quantity during one cycle of variation; as, mean distance; mean motion; mean solar day. [1913 Webster]

{Mean distance} (of a planet from the sun) (Astron.), the average of the distances throughout one revolution of the planet, equivalent to the semi-major axis of the orbit.

{Mean error} (Math. Phys.), the average error of a number of observations found by taking the mean value of the positive and negative errors without regard to sign.

{Mean-square error}, or {Error of the mean square} (Math. Phys.), the error the square of which is the mean of the squares of all the errors; -- called also, {mean square deviation}, {mean error}.

{Mean line}. (Crystallog.) Same as {Bisectrix}.

{Mean noon}, noon as determined by mean time.

{Mean proportional} (between two numbers) (Math.), the square root of their product.

{Mean sun}, a fictitious sun supposed to move uniformly in the equator so as to be on the meridian each day at mean noon.

{Mean time}, time as measured by an equable motion, as of a perfect clock, or as reckoned on the supposition that all the days of the year are of a mean or uniform length, in contradistinction from apparent time, or that actually indicated by the sun, and from sidereal time, or that measured by the stars. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Mean time — Time Time, n.; pl. {Times}. [OE. time, AS. t[=i]ma, akin to t[=i]d time, and to Icel. t[=i]mi, Dan. time an hour, Sw. timme. [root]58. See {Tide}, n.] 1. Duration, considered independently of any system of measurement or any employment of terms… …   The Collaborative International Dictionary of English

  • mean|time — «MEEN TYM», noun, adverb. –n. the time between. SYNONYM(S): interim, interval. –adv. 1. in the time between. 2. at the same time. mean time, time according to the hour angle of the mean sun, constituting the “ordinary time” or “clock time” of… …   Useful english dictionary

  • Mean Time — est un album de rock du groupe anglais The Barracudas. L abum est produit par Peter Gage. Il est enregistré en octobre et novembre 1982 au Startling Studios, le studio de Ringo Starr, a Ascot en Angleterre. Il ne comprend que des créations… …   Wikipédia en Français

  • mean time — /ˈmin taɪm / (say meen tuym) noun the time at a given place on earth based on a day of 24 hours; the interval between successive local noons on which local time is based varies and so an average day of 24 hours is used, giving mean time. Also,… …   Australian English dictionary

  • mean time — noun a) A variant spelling of meantime. Mean time between failures b) A mean (average) amount of time …   Wiktionary

  • mean time — vidutinė trukmė statusas T sritis fizika atitikmenys: angl. averaged time; mean time vok. mittlere Zeit, f rus. среднее время, n; усреднённое время, n pranc. temps moyen, m …   Fizikos terminų žodynas

  • mean time — noun (astronomy) time based on the motion of the mean sun (an imaginary sun moving uniformly along the celestial equator) • Syn: ↑mean solar time • Topics: ↑astronomy, ↑uranology • Hypernyms: ↑time unit, ↑ …   Useful english dictionary

  • mean time — noun Date: 1751 time that is based on the motion of the mean sun called also mean solar time …   New Collegiate Dictionary

  • mean time — noun Astronomy another term for mean solar time …   English new terms dictionary

  • mean time — standard time according to the time at Greenwich (England) …   English contemporary dictionary

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