tono-


a combining form with the meanings “stretching,” “tension,” “tone,” used in the formation of compound words: tonometer.

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Origin of tono-

< Greek tón(os) (see tone) + -o-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for tono-

tono-

pref.

Tone; tension; pressure:tonography.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.