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Eastern time

noun
  1. See under standard time.
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Origin of Eastern time

An Americanism dating back to 1880–85
Also called Eastern Standard Time.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for eastern standard time

Eastern Standard Time

noun
  1. one of the standard times used in North America, five hours behind Greenwich Mean Time
  2. one of the standard times used in Australia
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Abbreviation: EST
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

eastern standard time in Science

Eastern Standard Time

  1. Standard time in the fifth time zone west of Greenwich, England, reckoned at 75° west and used, for example, in the eastern part of North America.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.