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

Nearby words

  1. tonne,
  2. tonneau,
  3. tonner,
  4. tonnish,
  5. tonnishly,
  6. tonoclonic,
  7. tonoclonic spasm,
  8. tonofibril,
  9. tonofilament,
  10. tonograph

Origin of tono-

< Greek tón(os) (see tone) + -o- Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for tono-



Tone; tension; pressure:tonography.

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