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GMT

American  
Or G.M.T.
  1. Greenwich Mean Time.


GMT British  

abbreviation

  1. Greenwich Mean Time

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What is GMT? GMT is short for Greenwich Mean Time, an international reference point for time zones. How is GMT pronounced?[ gee-em-tee ]

Compare meaning

How does gmt compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

On Tuesday, Sheppard told jurors he entered Aria's home after finishing work at 18:03 GMT.

From BBC • Jun. 16, 2026

Market focus is also on the European Central Bank rate decision due at 1215 GMT, where an interest rate increase is expected.

From The Wall Street Journal • Jun. 11, 2026

Before the speech, expected at 0830 GMT, Leo will meet with Sanchez.

From Barron's • Jun. 8, 2026

The spacecraft achieved lift-off on a Vega-C rocket at 0352 GMT on Tuesday from Europe's spaceport in Kourou, French Guiana, on the northeastern coast of South America.

From Barron's • May 19, 2026

GMT polezeidom was meant to be a solid wall of oatmeal-thick bureaucracy, courtesy of some crafty, anonymous PDTalist.

From Eastern Standard Tribe by Doctorow, Cory

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