noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   One of the specially large spores of certain flowerless plants, as Selaginella, etc.
2. 2
   larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte wordnet

Synonyms

All synonyms

megasporemegasporespore

Etymology

From macro- + spore.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.