adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A rock of this kind. countable, uncountable

Adjective

1. 1
   Whose crystalline nature only becomes apparent at high levels of magnification. not-comparable

Synonyms

All synonyms

microaphanitic

Etymology

From crypto- + crystalline.

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