What do a.m. and p.m. stand for?


[im-uh-mawr-ee-uh l, -mohr-] /ˌɪm əˈmɔr i əl, -ˈmoʊr-/
extending back beyond memory, record, or knowledge:
from time immemorial.
Origin of immemorial
1595-1605; < Medieval Latin immemoriālis. See im-2, memorial
Related forms
immemorially, adverb
timeless, ancient, ageless, olden. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for immemorial
  • For time immemorial, humanity has strived to have an intimate relationship with this alternate experiential reality.
  • Hence it is that, from time immemorial, she has sought some form of family limitation.
  • In the rest of the world the stream of life still flowed as it had flowed for immemorial years.
  • Since time immemorial, would-be aviators have tried to fly by mimicking birds and bees.
  • Its leaves are dried, crushed into powder and made into a paste used since time immemorial as a cosmetic.
  • From time immemorial, humans have used stories to communicate and make sense of their experiences.
  • Since time immemorial, people have left their countries in search of a better life for themselves and their families.
  • Since time immemorial, people have been transferring skills from one generation to another in some form of apprenticeship.
  • From time immemorial, they have been formed by wood combustion.
British Dictionary definitions for immemorial


originating in the distant past; ancient (postpositive in the phrase time immemorial)
Derived Forms
immemorially, adverb
Word Origin
C17: from Medieval Latin immemoriālis, from Latin im- (not) + memoriamemory
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
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Word Origin and History for immemorial

c.1600, from French immémorial (16c.) "old beyond memory," from Medieval Latin immemorialis, from assimilated form of in- "not, opposite of" (see in- (1)) + memorialis (see memorial). Something immemorial is ancient beyond memory; something immemorable is not memorable.

Online Etymology Dictionary, © 2010 Douglas Harper
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Idioms and Phrases with immemorial


The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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