noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The formation of four haploid microspores by meiosis. uncountable
2. 2
   In angiosperms, the formation of pollen and thus the production of the male gametophyte. uncountable

Etymology

From microspore + -o- + -genesis.

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