cleistothecium

or clis·to·the·ci·um

[ klahy-stuh-thee-shee-uhm, -see-uhm ]
/ ˌklaɪ stəˈθi ʃi əm, -si əm /

noun, plural cleis·to·the·ci·a [klahy-stuh-thee-shee-uh, -see-uh]. /ˌklaɪ stəˈθi ʃi ə, -si ə/.

(in certain ascomycetous fungi) a closed, globose ascocarp from which the ascospores are released only by its rupture or decay.

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Origin of cleistothecium

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for cleistothecium

cleistothecium
[ klī′stə-thēsē-əm ]

Plural cleistothecia

A closed spherical ascocarp, such as the truffle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.