Megaspore is a coordinate term of microspore.
In botany terms the difference between microspore and megaspore
is that microspore is smaller of the two spores produced by plants, compare megaspore while megaspore is the larger spore of a heterosporous plant, typically producing a female gametophyte.
microspore
English
Noun
(
en noun)
(botany) Smaller of the two spores produced by plants, compare megaspore.
References
* OED2
Anagrams
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megaspore
English
Noun
(
en noun)
(botany) The larger spore of a heterosporous plant, typically producing a female gametophyte
Synonyms
* macrospore
Coordinate terms
* microspore
Derived terms
* megasporic
Related terms
* megasporocyte