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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 ��ó��os, 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.

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 ��é�ٰ��Dz�. Tonometer literally translates to “tone measure.”

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

• tonoclonic
• tonofilament
• tonograph
• tonoplast
• tonotopic
• tonotropic

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

• noto-
• toco-
• tomo-
• topo-
• toxo-
• -tion
• -ton
• -tron

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

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 ��ó��os, 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.

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 ��é�ٰ��Dz�. Tonometer literally translates to “tone measure.”

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

• tonoclonic
• tonofilament
• tonograph
• tonoplast
• tonotopic
• tonotropic

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

• noto-
• toco-
• tomo-
• topo-
• toxo-
• -tion
• -ton
• -tron

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