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coordinated universal time
[ koh-awr-dn-ey-tid yoo-nuh-vur-suhl tahym ]
/ koʊˈɔr dnˌeɪ tɪd ˌyu nəˈvɜr səl ˌtaɪm /
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noun
Greenwich Time that is adjusted to minimize its divergence from international atomic time. Abbreviation: UTC
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Origin of coordinated universal time
First recorded in 1965–70
Words nearby coordinated universal time
co-orbital, co-ordinal, coordinate, coordinate bond, coordinate clause, coordinated universal time, coordinate geometry, coordinates, coordinate system, coordinating conjunction, coordination
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Scientific definitions for coordinated universal time
coordinated universal time
[ kō-ôr′dn-ā′tĭd ]
A highly accurate time scale based on time measured by an atomic clock. Because coordinated universal time is unaffected by the gradual slowing of Earth's rotation, leap seconds are added as needed to synchronize it with the sidereal (rotation-based) universal time. Coordinated universal time is used internationally for scientific and technical purposes. Compare universal time.
The American Heritage® Science Dictionary
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