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azoic1

[uh-zoh-ik, ey-] /əˈzoʊ ɪk, eɪ-/
adjective, Geology
1.
(formerly) noting or pertaining to the Precambrian Era, especially that part formerly believed to precede the first appearance of life; Archean.
Compare Eozoic.
Origin
1840-1850
1840-50; < Greek ázō(os) lifeless (see azo-) + -ic

azoic2

[a-zoh-ik] /æˈzoʊ ɪk/
adjective
1.
of, pertaining to, or characteristic of the azo group.
Origin
azo- + -ic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for azoic
  • azoic coupling components react with diazonium salts in the dye bath or on the fibers to form dyes.
  • The organic-rich muds deposited in the sea were preserved in the anaerobic, azoic conditions that resulted.
  • azoic dyes, are insoluble pigments anchored within the fiber by padding with a soluble coupling compound, usually naphthol.
British Dictionary definitions for azoic

azoic

/əˈzəʊɪk; eɪ-/
adjective
1.
without life; characteristic of the ages that have left no evidence of life in the form of organic remains
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
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Word Origin and History for azoic
adj.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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azoic in Medicine

azoic a·zo·ic (ā-zō'ĭk)
adj.
Containing no living things; lacking organic life.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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16
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