[ as-kuh-mahy-seet, -mahy-seet ]
/ ˌæs kəˈmaɪ sit, -maɪˈsit /

noun Mycology.

any fungus of the phylum Ascomycota (or class Ascomycetes), including the molds and truffles, characterized by bearing the sexual spores in a sac (as distinguished from basidiomycete).

Origin of ascomycete

From New Latin, dating back to 1855–60; see origin at asco-, -mycete
Also called sac fungus. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ascomycetes

British Dictionary definitions for ascomycetes


/ (ˌæskəmaɪˈsiːt) /


any fungus of the phylum Ascomycota (formerly class Ascomycetes) in which the spores (ascospores) are formed inside a club-shaped cell (ascus). The group includes yeast, penicillium, aspergillus, truffles, and certain mildews

Derived Forms

ascomycetous, adjective
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

Medicine definitions for ascomycetes (1 of 2)


[ ăs′kō-mī-sētēz′ ]


A class of fungi characterized by the presence of asci and spores, and having two distinct reproductive phases, a perfect stage and an imperfect stage.

Medicine definitions for ascomycetes (2 of 2)


[ ăs′kō-mīsēt′, -mī-sēt ]


A member of the class Ascomycetes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for ascomycetes


[ ăs′kō-mīsēt′ ]

Any of various fungi belonging to the phylum Ascomycota, characterized by the presence of sexually produced spores formed within an ascus. Like most fungi, ascomycetes also reproduce asexually by the formation of nonsexual spores called conidia at the ends of filaments known as hyphae. Yeasts, many molds that cause food spoilage, and the edible fungi known as morels and truffles, are ascomycetes. A number of serious plant diseases, including ergot, the powdery mildews that attack fruit, and Dutch elm disease, are also caused by ascomycetes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.