heterosporous

[het-uh-ros-puh-ruh s, het-er-uh-spawr-uh s, -spohr-]

Origin of heterosporous

First recorded in 1870–75; hetero- + -sporous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for heterosporous

Historical Examples of heterosporous


British Dictionary definitions for heterosporous

heterosporous

adjective
  1. (of seed plants and some ferns and club mosses) producing megaspores and microsporesCompare homosporous
Derived Formsheterospory, 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

heterosporous in Science

heterosporous

[hĕt′ər-ə-spôrəs, hĕt′ə-rŏspər-əs]
  1. 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.