• (n.) 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.
(from the article `duricrust`) Mechanisms that are capable of promoting dehydration and hardening of ferricrusts, whether before, during, or after stripping of the overlying soil, ...
Si·lic`i·fi·ca'tion noun [ See Silicify .] (Chemistry) 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. 
Process whereby silica replaces the original material of a substance, such as wood.
Process whereby silica replaces the original material of a substance. For example, silicified wood.
Process whereby silica replaces the original material of a substance. For example, silicified wood.