< 1911 Encyclopædia Britannica
HOUR, the twenty-fourth part of a civil day, the twelfth part of a natural day or night, a space of time of sixty minutes’ duration. The word is derived through the O. Fr. ure, ore, houre, mod. heure, from Lat. hora, Gr. ὥρα, season, time of day, hour (see Calendar).
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