OriginFrom Latin prasius, from Ancient Greek πράσιος (prásios, “of a green colour”), from πράσον (práson, “leek”).
- countable, uncountableA variety of cryptocrystalline of a green colour.
- countable, uncountableA variety of chalcedony, with a green color due to inclusions of actinolite or other iron-bearing minerals.
Formsprases(plural)