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tono-

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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. 2021

WORDS THAT USE TONO-

What does tono- mean?

Tono- is a combining form used like a prefix meaning “stretching,” “tension,” “tone.” It is occasionally used in a variety of scientific terms, especially in medicine and biology. In this combining form, tone can refer variously to muscle tone or musical tone, depending on context.

Tono- comes from the Greek tónos, meaning “tone.” Discover more about this term at our entry for tone.

What are variants of tono-?

When combined with words or word elements that begin with a vowel, tono- becomes ton-, as in toneme.

Examples of tono-

One example of a scientific term that features the form tono- is tonometer, which has various meanings, including “an instrument for measuring the frequencies of tones, as a tuning fork or a graduated set of tuning forks.”

The form tono- means “tone,” while the -meter portion of the word means “measure,” from Greek métron. Tonometer literally translates to “tone measure.”

What are some words that use the combining form tono-?

What are some other forms that tono- may be commonly confused with?

Break it down!

The combining form -graphy denotes a process of recording. With this in mind, what is tonography?

How to use tono- in a sentence

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.
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