ˈherəˌpaˌthīt, -pȧˌ- noun
( -s )
Etymology: William B. Herapath died 1868 English chemist + English -ite
: a salt of quinine that is obtained by treating the sulfate with iodine in the form of rhomboidal plates capable of polarizing light and that is used as a polarizing agent usually in the form of small crystals oriented in the same direction in a transparent film