• synonyms


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

First recorded in 1870–75; asco- + spore
Related formsas·co·spor·ic [as-kuh-spawr-ik, -spor-] /ˌæs kəˈspɔr ɪk, -ˈspɒr-/, as·cos·po·rous [as-kos-per-uh s, as-kuh-spawr-, -spohr-] /æsˈkɒs pər əs, ˌæs kəˈspɔr-, -ˈspoʊr-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ascospore


  1. one of the spores (usually eight in number) that are produced in an ascus
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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

ascospore in Science


  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.