dəˈvēˌlīt, -viˌ- noun
( -s )
Etymology: French devill ine devillite (from Henri Étienne Sainte-Claire Deville died 1881 French chemist + French -ine ) + English -ite
: a mineral Cu 4 Ca(SO 4 ) 2 (OH) 6 .3H 2 O consisting of a hydrous basic sulfate of copper and calcium found in Cornwall and elsewhere in dark green 6-sided platy crystals