Function: noun
Date: 1883
: a light friable siliceous material derived chiefly from diatom remains and used especially as a filter
Function: noun
Date: 1883
: a light friable siliceous material derived chiefly from diatom remains and used especially as a filter
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012