[ 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

First recorded in 1870–75; hetero- + -sporous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for heterosporous

British Dictionary definitions for heterosporous


/ (ˌhɛtəˈrɒspərəs) /


(of seed plants and some ferns and club mosses) producing megaspores and microsporesCompare 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

Science definitions for heterosporous


[ hĕt′ər-ə-spôrəs, hĕt′ə-rŏspər-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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.