( n. )
An earthy substance originally brought from Tripoli, used in polishing stones and metals. It consists almost wholly of the siliceous shells of diatoms.
( n. )
An earthy substance originally brought from Tripoli, used in polishing stones and metals. It consists almost wholly of the siliceous shells of diatoms.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012