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

Origin of myco-

combining form representing Greek mýkēs mushroom, fungus Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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

Word Origin and History for myco-


before vowels myc-, word-forming element meaning "mushroom, fungus," formed irregularly from Greek mykes "fungus, mushroom, anything shaped like a mushroom," from PIE root *meug- "slimy, slippery" (see mucus). The correct form is myceto- (mycet-).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for myco-



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