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

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

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To tauto-
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
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

tauto- or taut-
Same; identical: tautomeric.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature