A yellow-green colour, like that of a celery.
A European herb (Apium graveolens) of the carrot family.
The stalks of this herb eaten as a vegetable.
A mild green colour, like that of the mineral.
A bright green mineral, a basic copper carbonate, Cu₂CO₃(OH)₂; one of the principal ores of copper.
Of a colour ranging from olive-taupe to a mild to deeply-rich (at times seemingly translucent) green, like that of the mineral which is present on oxidized copper.