meantime

[ meen-tahym ]
/ ˈminˌtaɪm /

noun

the intervening time: The party is Tuesday, but in the meantime I have to shop and prepare the food.

adverb

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Origin of meantime

Middle English word dating back to 1300–50; see origin at mean3, time
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for meantime (1 of 2)

meantime
/ (ˈmiːnˌtaɪm) /

noun

the intervening time or period, as between events (esp in the phrase in the meantime)

adverb

another word for meanwhile

British Dictionary definitions for meantime (2 of 2)

mean time

mean solar time


noun

the time, at a particular place, measured in terms of the passage of the mean sun; the timescale is not precisely constantSee mean solar day
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

Scientific definitions for meantime

mean time

Solar time as measured by the mean sun, resulting in equal 24-hour days throughout the year. If days were measured by the actual movement of the Sun, they would vary slightly in length at different times of the year due to differences in Earth's orbital speed and other factors. Mean time is the basis for standard clock time throughout most of the world. See more at solar time universal time.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.