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[het-uh-ros-puh-ruh s, het-er-uh-spawr-uh s, -spohr-] /ˌhɛt əˈrɒs pə rəs, ˌhɛt ər əˈspɔr əs, -ˈspoʊr-/
adjective, Botany.
having more than one kind of spore.
Origin of heterosporous
1870-75; hetero- + -sporous Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for heterosporous


(of seed plants and some ferns and club mosses) producing megaspores and microspores Compare homosporous
Derived Forms
heterospory, noun
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
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heterosporous in Science
  (hět'ər-ə-spôr'əs, hět'ə-rŏs'pər-əs)   
Producing two types of spores differing in size and sex, the male microspore and the female megaspore, which develop into separate male and female gametophytes. All seed-bearing plants, as well as some ferns and other seedless plants, are heterosporous. Compare homosporous.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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