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thi-

 - 6 dictionary results

thio-

 
a combining form meaning “sulfur,” used in chemical nomenclature in the names of compounds in which part or all of the oxygen atoms have been replaced by sulfur; often used to designate sulfur analogues of oxygen compounds.
Also, especially before a vowel, thi-.

Origin:
comb. form repr. Gk theîon
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To thi-
thi-  
pref.  Variant of thio-.
thio- or thi-  
pref.  Containing sulfur, used especially of a compound in which oxygen has been replaced by a divalent sulfur: thiourea.

[Greek theio-, from theion, sulfur.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

thi- pref.
Variant of thio-.

thio- or thi-
pref.
Containing sulfur, used especially of a compound in which oxygen has been replaced by a divalent sulfur: thioacid.

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