Chem.
a white, water-soluble powder, Al 2 (SiF 6 ) 3 , used in the manufacture of optical glass and of synthetic sapphires and rubies.
Chem.
a white, water-soluble powder, Al 2 (SiF 6 ) 3 , used in the manufacture of optical glass and of synthetic sapphires and rubies.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012