Sĭ-lĭ'çi-fy1, v. t.
v. t. [imp. & p. p. SILICIFIED; p. pr. & vb. n. SILICIFYING.] [Fr. silicifier, fr. Lat. silex, silicis, a flint, and facere, to make.] To convert into silica, or petrify by silica, thus rendering silicious.
The specimens found near Philadelphia are completely silicified. Say.
☞ The silica may take the form of agate, chalcedony, flint, hornstone, or crystalline quartz. Dana.