her·a·path·ite | \ ˈherəˌpaˌthīt, -pȧˌ- \
plural -s
Definition of herapathite
: 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
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