1250-1300; < Latincēmentum, variant of caementum (singular of caementa unprocessed cuttings from the quarry, i.e., rough stone and chips) < *caed-mentom, equivalent to caed(ere) to cut + -mentum-ment; replacing Middle Englishcyment < Old Frenchciment < Latin, as above
c.1300, from O.Fr. ciment, from L. cæmenta "stone chips used for making mortar," from cædere "to cut down, chop, beat, hew, fell, slay" from PIE base *(s)k(h)a- "to strike" (cf. Skt. skhidati "beats, tears," Lith. kaisti "shave," Ger. heien "beat"). The sense evolution from "small broken stones" to "powdered stones used in construction" took place before the word reached English. The verb is from mid-14c.