• synonyms


[uh-zoh-ik, ey-]
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adjective Geology.
  1. (formerly) noting or pertaining to the Precambrian Era, especially that part formerly believed to precede the first appearance of life; Archean.
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Compare Eozoic.

Origin of azoic1

1840–50; < Greek ázō(os) lifeless (see azo-) + -ic


  1. of, relating to, or characteristic of the azo group.
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Origin of azoic2

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples

British Dictionary definitions for azoic


  1. without life; characteristic of the ages that have left no evidence of life in the form of organic remains
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Word Origin

C19: from Greek azōos lifeless; see azo-
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

Word Origin and History for azoic


1854, with -ic + Greek azoos, from a- "not, without" (see a- (3)) + zoon "animal" (see zoo).

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Online Etymology Dictionary, © 2010 Douglas Harper

azoic in Medicine


  1. Containing no living things; lacking organic life.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.