Source : Webster's Revised Unabridged Dictionary (1913)

Silicification \Si*lic`i*fi*ca"tion\, n. [See {Silicify}.]
   (Chem.)
   Thae act or process of combining or impregnating with silicon
   or silica; the state of being so combined or impregnated; as,
   the silicification of wood.