'Macrospore' definitions:
Definition of 'macrospore'
(from WordNet)
noun
Larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte [syn: megaspore, macrospore]
Definition of 'Macrospore'
From: GCIDE
- Macrospore \Mac"ro*spore\, n. [Macro- + spore.] (Bot.) One of the specially large spores of certain flowerless plants, as Selaginella, etc. [1913 Webster]