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-tonia

American

a combining form with the meaning “muscle tension, nerve tension,” as specified by the initial element (hypertonia ); used also in the formation of words that denote more generally a personality type or personality disorder (catatonia; somatotonia ).

Etymology

Origin of -tonia

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.