• (v. t.) To convert into, or to impregnate with, silica, or with the compounds of silicon. • (v. i.) To become converted into silica, or to be impregnated with silica.
Si·lic'i·fy transitive verb [ imperfect & past participle Silicified ; present participle & verbal noun Silicifying .] [ Latin silex , silicis , a flint + -fy : confer French silicifier .] (Chemistry)