adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Describing a pollen grain in which the aperture is present but not in an obvious gap or furrow, instead covered or hidden by a continuous outer layer of the pollen wall that acts as a protective operculum. not-comparable

Etymology

From crypto- + aperturate.

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