mean time

mean time

n.

Time measured with reference to the mean sun, giving equal 24-hour days throughout the year.

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mean time, mean solar time

n

(Astronomy) the time, at a particular place, measured in terms of the passage of the mean sun; the timescale is not precisely constant See mean solar day

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mean time

Solar time as measured by the mean sun, resulting in equal 24-hour days throughout the year. If days were measured by the actual movement of the Sun, they would vary slightly in length at different times of the year due to differences in Earth's orbital speed and other factors. Mean time is the basis for standard clock time throughout most of the world. See more at solar timeuniversal time

Thesaurus

Noun

1.

mean time - (astronomy) time based on the motion of the mean sun (an imaginary sun moving uniformly along the celestial equator) mean solar time astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole time unit, unit of time - a unit for measuring time periods