Greenwich Mean Time

Green·​wich Mean Time | \ ˈgri-nij- How to pronounce Greenwich Mean Time (audio) , ˈgre-, -nich- \

Definition of Greenwich Mean Time

: the mean time that is associated with the prime meridian of Greenwich, England, and historically used as the prime basis of standard time throughout the world The British traditionally used Greenwich Mean Time, calculated from the meridian running through Greenwich, a borough of London.The New York Times Coordinated Universal Time is what used to be called Greenwich Mean Time, but the new name doesn't make it any more universal than it ever was, and it remains a time zone centered in Britain.— Natalie Angier abbreviation GMT

called also Greenwich Time

— compare coordinated universal time

First Known Use of Greenwich Mean Time

1782, in the meaning defined above

History and Etymology for Greenwich Mean Time

Greenwich, England

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The first known use of Greenwich Mean Time was in 1782

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Cite this Entry

“Greenwich Mean Time.” Dictionary, Merriam-Webster, Accessed 5 May. 2021.

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