[klahy-stuh-thee-shee-uh m, -see-uh m]
- (in certain ascomycetous fungi) a closed, globose ascocarp from which the ascospores are released only by its rupture or decay.
Origin of cleistothecium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cleistothecia
The asci are developed in the large dense fruit bodies (cleistothecia) and the spores escape by the decay of the wall.
- 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.