( n. )
A colorless transparent mineral, resembling quartz, occurring with castor or castorite on the island of Elba. It is a silicate of alumina and caesia. Called also pollux.
( n. )
A colorless transparent mineral, resembling quartz, occurring with castor or castorite on the island of Elba. It is a silicate of alumina and caesia. Called also pollux.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012