Cĕm'en-tā'tion, n.

n. 1. The act of cementing; the act of uniting by a suitable substance. 2. (Chem.) A process which consists in surrounding a solid body with the powder of other substances, and heating the whole to a degree not sufficient to cause fusion, the physical properties of the body being changed by chemical combination with the powder; thus iron becomes steel by cementation with charcoal, and green glass porcelain by cementation with sand.