mean solar day(n = noun.time) 24-hour interval, day, solar day, twenty-four hour period, twenty-four hours - 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"
is a kind of time unit, unit of time
has parts: day, daylight, daytime, high noon, midday, noon, noonday, noontide, twelve noon, dark, night, nighttime, 60 minutes, hour, hr
has particulars: tomorrow, today, yesterday, morrow, eve, date, day of the month, date

admission day, all day long, all fools' day, all saints' day, all souls' day, american indian day, annunciation day, april fools' day, arbor day, arithmetic mean, armed forces day, armistice day, ascension day, bastille day, bissextile day, boxing day, break of day, break of the day, by the day, calendar day, call it a day, candlemas day, childermas day, christian holy day, christmas day, citizenship day, civil day, clarence day, clarence shepard day jr., class day, columbus day, commencement day, commonwealth day, day, day after day, day bed, day blindness, day boarder, day book, day by day, day camp, day care, day care center, day game, day in and day out, day in day out, day jessamine, day laborer, day labourer, day lily, day nursery, day of atonement, day of judgement, day of judgment, day of reckoning, day of remembrance, day of rest, day of the month, day of the week, day off, day return, day school, day shift, day watch, decoration day, degree day, discovery day, dominion day, each day, easter day, election day, ember day, empire day, every day, fast day, father's day, feast day, fete day, field day, flag day, forever and a day, future day, gain the day, geometric mean, golden mean, good day, greenwich mean time, groundhog day, guy fawkes day, harmonic mean, high holy day, holy day, holy day of obligation, holy innocents' day, inauguration day, independence day, innocents' day, jewish holy day, judgement day, judgment day, labor day, lady day, lammas day, last day, leap day, lord's day, lunar day, major fast day, market day, martin luther king day, may day, mean, mean deviation, mean deviation from the mean, mean distance, mean solar time, mean sun, mean time, mean value, memorial day, michaelmas day, midsummer day, midsummer's day, minor fast day, mother's day, naked as the day one was born, naked as the day you were born, name day, natal day, new year's day, night and day, order of the day, pan american day, pancake day, patriot's day, patriots' day, pioneers' day, polling day, poppy day, present day, presidents' day, quarter day, rag day, rainy day, red-letter day, regression toward the mean, remembrance day, rest day, robert e lee day, rogation day, saint patrick's day, saint valentine's day, saint's day, school day, seize the day, sidereal day, six day war, solar, solar apex, solar array, solar battery, solar calendar, solar cell, solar collector, solar constant, solar day, solar dish, solar eclipse, solar energy, solar flare, solar furnace, solar gravity, solar halo, solar heater, solar house, solar magnetic field, solar month, solar myth, solar panel, solar parallax, solar physics, solar plexus, solar power, solar prominence, solar radiation, solar rays, solar system, solar telescope, solar thermal system, solar trap, solar wind, solar year, speech day, st john's day, st martin's day, st patrick's day, st valentine's day, tag day, term day, texas independence day, thanksgiving day, three kings' day, time of day, transfiguration day, twelfth day, united nations day, unlucky day, v-e day, v-j day, valentine day, valentine's day, veterans day, veterans' day, victoria day, victory day, washing day, wedding day, work day, working day