Greenwich mean time

play
noun, often capitalized M&T Green·wich mean time \ˈgri-nij-, ˈgre-, -nich-\

Definition of Greenwich mean time

  1. :  the mean solar time of the meridian of Greenwich used historically as the prime basis of standard time throughout the world —called also Greenwich time — compare coordinated universal time

Origin and Etymology of greenwich mean time

Greenwich, England


First Known Use: 1863


GREENWICH MEAN TIME Defined for English Language Learners

Greenwich mean time

play
noun, often capitalized M&T Green·wich mean time \ˈgri-nij-, ˈgre-, -nich-\

Definition of Greenwich mean time for English Language Learners

  • : the time in Greenwich, England, that is used as the basis of standard time throughout the world


Learn More about greenwich mean time


Seen and Heard

What made you want to look up Greenwich mean time? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

of, relating to, or resembling a fox

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • alphabet-magnets
  • Which is the correct spelling?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ