twenty-four hour period(n = noun.time) 24-hour interval, day, mean solar day, solar day, 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

alabama period, by the hour, cambrian period, canonical hour, carboniferous period, catskill period, champlain period, chemung period, class period, credit hour, cretaceous period, devonian period, duty period, early-morning hour, eleventh hour, fertile period, final period, first period, geological period, gestation period, glacial period, hamilton period, happy hour, historic period, historical period, hour, hour angle, hour circle, hour hand, incubation period, jurassic period, kilometers per hour, kilometres per hour, kilowatt hour, late-night hour, latency period, latent period, light hour, lower carboniferous period, lunar time period, lunch period, man hour, miles per hour, missippian period, neonatal period, niagara period, orbit period, ordovician period, overtime period, pennsylvanian period, period, period of play, period of time, period piece, period style, permian period, person hour, playing period, precambrian period, quaternary period, reconstruction period, refractory period, rest period, rush hour, safe period, salina period, second period, semester hour, sidereal hour, silurian period, tertiary period, test period, third period, time period, trenton period, trial period, triassic period, twenty-four, twenty-four hours, upper carboniferous period, witching hour, zero hour