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a combining form meaning “hair,” used in the formation of compound words: trichocyst.
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Which form is commonly used with other verbs to express intention?
Also especially before a vowel, trich-.

Origin of tricho-

<Greek tricho-, combining form of thríx (genitive trichós)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022


What does tricho- mean?

Tricho- is a combining form used like a prefix meaning “hair.” It is used in many medical and scientific terms.

Tricho- comes from the Greek thríx, meaning “hair.” Another combining form meaning “hair,” and especially “bristles,” is chaeto-, which you can learn more about in our Words That Use article for the form.

What are variants of tricho-?

When combined with words or word elements that begin with a vowel, tricho- becomes trich-, as in trichitis.

Examples of tricho-

One example of a scientific term that features the combining form tricho- is tricholith, “a small mass of hair”—that is, a hairball.

The first part of the word, tricho-, means “hair.” What about the -lith portion of the word? The combining form -lith means “stone,” from the Greek líthos. In pathology, such a “stone” can denote various types of small masses or concretions. Tricholith literally translates to “hair stone.”

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

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

In a few instances, tricho- is used to mean “three parts,” from the Greek trícha, source of trichotomy. This rare use of tricho- is modeled on dicho- (“in two parts”), which you can learn more about in our Words That Use article for this form.

Break it down!

The combining form -pathy is often used to denote “disease.” With this in mind, what does the medical condition of trichopathy involve?

British Dictionary definitions for tricho-


before a vowel trich-

combining form
indicating hair or a part resembling hairtrichocyst

Word Origin for tricho-

from Greek thrix (genitive trikhos) hair
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for tricho-


Hair; thread; filament:trichonocardiosis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.