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hour |
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hour 1. a period of time equal to 3600 seconds; 1/24th of a calendar day 2. Astronomy an angular measurement of right ascension equal to 15° or a 24th part of the celestial equator hour [au̇r] (mechanics) A unit of time equal to 3600 seconds. Abbreviated h; hr. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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