a·zo·ic

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


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

Dictionary.com Unabridged

a·zo·ic

2 [a-zoh-ik]
adjective
of, pertaining to, or characteristic of the azo group.

Origin:
azo- + -ic

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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00:10
Azoic is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Collins
World English Dictionary
azoic (əˈzəʊɪk, eɪ-) [Click for IPA pronunciation guide]
 
adj
without life; characteristic of the ages that have left no evidence of life in the form of organic remains
 
[C19: from Greek azōos lifeless; see azo-]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

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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Example sentences
The organic-rich muds deposited in the sea were preserved in the anaerobic, azoic conditions that resulted.
Azoic coupling components react with diazonium salts in the dye bath or on the fibers to form dyes.
Azoic dyes, are insoluble pigments anchored within the fiber by padding with a soluble coupling compound, usually naphthol.
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