from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The larger of two types of spores that give rise to a female gametophyte. Also called macrospore.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The larger spore of a heterosporous plant, typically producing a female gametophyte
from The Century Dictionary and Cyclopedia
- n. Same as macrospore.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte
mega- + spore (Wiktionary)