meg·a·spore (m g  -spôr , -sp r)n. The larger of two types of spores that give rise to a female gametophyte. Also called macrospore. meg a·sporic adj. |
megaspore [ˈmɛgəˌspɔː]
n
1. (Life Sciences & Allied Applications / Botany) Also called macrospore the larger of the two types of spore produced by some spore-bearing plants, which develops into the female gametophyte Compare microspore [1]
2. (Life Sciences & Allied Applications / Botany) the cell in flowering plants that gives rise to the embryo sac
megasporic adj
| megaspore (mg-spôr) One of the two types of haploid spores produced by a heterosporous plant. Megaspores develop into female gametophytes and are usually larger than microspores. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  megaspore - larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophytespore - a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion; "a sexual spore is formed after the fusion of gametes" |
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