noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A variety of cryptocrystalline of a green colour. countable, uncountable
2. 2
   A variety of chalcedony, with a green color due to inclusions of actinolite or other iron-bearing minerals. countable, uncountable

Etymology

From Latin prasius, from Ancient Greek πράσιος (prásios, “of a green colour”), from πράσον (práson, “leek”).

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