tauto-

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

   tautomerism.

tauto-

combining_form

1. identical or same

   tautology

   tautonym

Word History and Origins

Origin of tauto-¹

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

Word History and Origins

Origin of tauto-¹

from Greek tauto, from to auto