Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A spore that gives rise to a female gametophyte and is larger than a microspore.

from The Century Dictionary.

  • noun Same as macrospore.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The larger spore of a heterosporous plant, typically producing a female gametophyte

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

mega- +‎ spore

Examples

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