[as-kuh-spawr, -spohr]
noun Mycology.
a spore formed within an ascus.

1870–75; asco- + spore

ascosporic [as-kuh-spawr-ik, -spor-] , ascosporous [as-kos-per-uhs, as-kuh-spawr-, -spohr-] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
ascospore (ˈæskəˌspɔː)
one of the spores (usually eight in number) that are produced in an ascus

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Science Dictionary
ascospore   (ās'kə-spôr')  Pronunciation Key 
A sexually produced fungal spore formed within an ascus of ascomycetes. Ascospores have a haploid number of chromosomes and are formed by meiosis of the diploid zygote that results when the nuclei of sexually compatible hyphae fuse together. When an ascospore is released and lands in a place that is rich in nutrients, it germinates and sends out hyphae of its own.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Conidia are produced in acervuli on the lesions resulting from ascospore infection.
We do not know which microbes may be involved in the ascospore germination process.
Mature cleistothecia will be harvested from leaves and monitored for ascospore maturity.
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