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1. One of the 24 equal parts of a day.
a. One of the points on a timepiece marking off 12 or 24 successive intervals of 60 minutes, from midnight to noon and noon to midnight or from midnight to midnight.
b. The time of day indicated by a 12-hour clock.
c. hours The time of day determined on a 24-hour basis: 1730 hours is 5:30 pm.
3. A unit of measure of longitude or right ascension, equal to 15° or 1/24 of a great circle.
a. A customary or fixed time: the dinner hour.
b. hours A set or customary period of time for a specified activity: banking hours.
a. A particular time: their hour of need.
b. A significant time: Her hour had come.
c. The present time: the man of the hour.
a. The work that can be accomplished in an hour.
b. The distance that can be traveled in an hour.
a. A single session of a school day or class.
b. A credit hour.
8. hours Ecclesiastical The canonical hours.
long hours
A longer than usual or customary period of time for a given activity: worked long hours to finish the project on time.

[Middle English, from Old French houre, from Latin hōra, from Greek hōrā, season, time; see yēr- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


pl n
1. (Industrial Relations & HR Terms) a period regularly or customarily appointed for work, business, etc
2. one's times of rising and going to bed (esp in the phrases keep regular, irregular, or late hours)
3. an indefinite period of time
4. (Ecclesiastical Terms)
a. the seven times of the day laid down for the recitation of the prayers of the divine office
b. the prayers recited at these times
5. the small hours the hours just after midnight
6. till all hours until very late


pl n
(Classical Myth & Legend) another word for the Horae
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hours - a period of time assigned for workhours - a period of time assigned for work; "they work long hours"
work time - a time period when you are required to work
duty period, work shift, shift - the time period during which you are at work
2.hours - an indefinite period of time; "they talked for hours"
period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Collins Multilingual Translator © HarperCollins Publishers 2009
References in classic literature ?
At the best, toiling as only picked men could toil, they made no more than three miles an hour. This meant longer hours of travel, and Daylight, for good measure and for a margin against accidents, hit the trail for twelve hours a day.
Without allowing himself even to think of what was to come, of how it would end, judging from his inquiries as to the usual duration of these ordeals, Levin had in his imagination braced himself to bear up and to keep a tight rein on his feelings for five hours, and it had seemed to him he could do this.
Now, for thirty-six hours we have been hidden under the water, and already the heavy atmosphere of the Nautilus requires renewal.
We did the escort duty; then we came back and struck for the plain and put the Rangers through a rousing drill - oh, for hours! Then we sent them home under Brigadier-General Fanny Marsh; then the Lieutenant-General and I went off on a gallop over the plains for about three hours, and were lazying along home in the middle of the afternoon, when we met Jimmy Slade, the drummer-boy, and he saluted and asked the Lieutenant-General if she had heard the news, and she said no, and he said:
As I interpreted the writing of the apparition, I had still some hours at my disposal.
"Two hours and a quarter -- that is nothing; we are well mounted, are we not, Porthos?"
It was too early yet to tell anything-- the bank would not open for nearly three hours. So in a frenzy of despair Marija began to claw her way toward the doors of this building, through a throng of men, women, and children, all as excited as herself.
"My departure is to be," said he, "at break of day, three o'clock in the morning; I have then fifteen hours before me.
Were your friends, the Allens, still in Bath, you might go to them with comparative ease; a few hours would take you there; but a journey of seventy miles, to be taken post by you, at your age, alone, unattended!"
Before many hours elapsed it would be necessary to start on my journey to Cumberland.
The earth was but a day old, having been new the night before at twelve; and two days must elapse before its crescent, freed from the solar rays, would serve as a clock to the Selenites, as in its rotary movement each of its points after twenty-four hours repasses the same lunar meridian.
One sees so many students abroad at all hours, that he presently begins to wonder if they ever have any working-hours.