What is "cementitious"

Cementitious \Cem`en*ti"tious\, a. [L. caementitius pertaining to quarry stones. See Cement, n. ] Of the nature of cement. [R.]
--Forsyth.

a. Resembling or having some properties of cement.

adj. like or relevant to or having the properties of cement; "the adhesion of cementitious materials"

Any of various building materials which may be mixed with a liquid, such as water, to form a cement base substance, and to which an aggregate may be added; includes cements, limes, and mortar