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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.

“STMicroelectronics’ Guidance Is Better Than Expected — Market Talk,” at 0823 GMT, included an incorrect ticker.

From The Wall Street Journal • Apr. 23, 2026

Female CJ7 was filmed with her clutch of four eggs for the third year in a row on her nest near Wareham, Dorset shortly before 07:00 GMT.

From BBC • Apr. 23, 2026

Benchmark Brent North Sea Crude was down 0.7 percent percent at $94.85 a barrel, while West Texas Intermediate fell 1.3 percent to $88.49 a barrel at around 1000 GMT.

From Barron's • Apr. 21, 2026

However, after 13:12 GMT, Noah did not move again.

From BBC • Apr. 16, 2026

Stations MHz Date GMT Km YV5ZZ/6 - LU1DAU 145.9 29/10/77 02.00 5,000~ World record distance on 144 MHz.

From The Dawn of Amateur Radio in the U.K. and Greece: a personal view by Joly, Norman F.