[klahy-stuh-thee-shee-uhm, -see-uhm]
noun, plural cleistothecia [klahy-stuh-thee-shee-uh, -see-uh] .
(in certain ascomycetous fungi) a closed, globose ascocarp from which the ascospores are released only by its rupture or decay.

cleisto- + thecium Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
cleistothecium   (klī'stə-thē'sē-əm)  Pronunciation Key 
Plural cleistothecia
A closed spherical ascocarp, such as the truffle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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