tauto

tauto-

a combining form meaning “same,” used in the formation of compound words: tautomerism.

Origin:
< Greek, combining form of tautó, contraction of tò autó the same

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World English Dictionary
tauto- or (before a vowel) taut-
 
combining form
identical or same: tautology; tautonym
 
[from Greek tauto, from to auto]
 
taut- or (before a vowel) taut-
 
combining form
 
[from Greek tauto, from to auto]

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

tauto- or taut-
pref.
Same; identical: tautomeric.

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