yüˈklōrə̇n, ˈyüklər- noun
( -s )
Etymology: Italian euclorina, from Greek euchlōros greenish (from eu- + chlōros greenish yellow) + Italian -ina -ine; from the color — more at yellow
: a mineral (K,Na) 8 Cu 9 (SO 4 ) 10 (OH) 6 composed of a basic sulfate of copper, sodium, and potassium found in lava at Vesuvius