WordReference Random House Unabridged Dictionary of American English © 2025
phar•mac•o•lite
(fär mak′ə līt′, fär′mə kə-),USA pronunciation n.
- Mineralogyhydrous calcium arsenate, 2CaO·As2O5·5H2O, formed by natural alteration of mineral deposits containing arsenopyrite and arsenical ores of cobalt and silver.
- 1795–1805; pharmaco- + -lite; modeled on German Pharmakolith