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a combining form meaning “mushroom, fungus,” used in the formation of compound words: mycology.
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Also especially before a vowel, myc-.

Origin of myco-

Combining form representing Greek mýkēs mushroom, fungus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021


What does myco- mean?

Myco- is a combining form used like a prefix meaning “mushroom, fungus.” It is used in many medical and scientific terms, especially in biology—as well as in a branch of biology known as mycology, as we’ll discuss below.

Myco- comes from the Greek mýkēs, meaning “mushroom, fungus.”

What are variants of myco-?

When combined with words or word elements that begin with a vowel, myco- becomes myc-, as in mycotic.

The closely related combining forms myceto- and -mycete both also indicate “mushroom, fungus.” The combining form -mycin used in the names of antibiotics, usually those derived from fungi.

Examples of myco-

You may be familiar with the word mycology, meaning “the branch of biology dealing with fungi.” It features the combining form myco-.

The first part of the word, myco-, means “fungus.” (Fungi is a plural form.) The second element, logy, may look familiar to you. Ultimately from the Greek lógos, meaning “word, saying, discourse,” -logy is commonly used to name fields of study. So, mycology literally translates to “the study of fungus.”

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

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

Break it down!

Flora means “the plants of a particular region or period.” With this in mind, what are mycoflora?

How to use myco- in a sentence

British Dictionary definitions for myco-


before a vowel myc-

combining form
indicating fungusmycology

Word Origin for myco-

from Greek mukēs fungus
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 myco-


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