mean solar day

mean solar day

n.

The period of time between two successive transits of the mean sun; the standard for the 24-hour day measured from midnight to midnight.

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mean solar day

See under solar time.

Thesaurus

Noun

1.

mean solar day - time for Earth to make a complete rotation on its axis; "two days later they left"; "they put on two performances every day"; "there are 30,000 passengers per day" 24-hour interval, day, solar day, twenty-four hour period, twenty-four hours time unit, unit of time - a unit for measuring time periods tomorrow - the day after today; "what are our tasks for tomorrow?" today - the day that includes the present moment (as opposed to yesterday or tomorrow); "Today is beautiful"; "did you see today's newspaper?" yesterday - the day immediately before today; "it was in yesterday's newspapers" morrow - the next day; "whenever he arrives she leaves on the morrow" eve - the day before; "he always arrives on the eve of her departure" date, day of the month - the specified day of the month; "what is the date today?" date - a particular day specified as the time something happens; "the date of the election is set by law" daylight, daytime, day - the time after sunrise and before sunset while it is light outside; "the dawn turned night into day"; "it is easier to make the repairs in the daytime" high noon, midday, noon, noonday, noontide, twelve noon - the middle of the day night, nighttime, dark - the time after sunset and before sunrise while it is dark outside 60 minutes, hour, hr - a period of time equal to 1/24th of a day; "the job will take more than an hour"