CEMENT

I. noun Etymology: Middle English sement, from Anglo-French ciment, from Latin caementum stone chips used in making mortar, from caedere to cut Date: 14th century 1. concrete , a powder of alumina, silica, lime, iron oxide, and magnesium oxide burned together in a kiln and finely pulverized and used as an ingredient of mortar and concrete, a binding element or agency: as, a substance to make objects adhere to each other, something serving to unite firmly , ~um , a plastic composition made especially of zinc or silica for filling dental cavities, the fine-grained groundmass or glass of a porphyry, II. verb Date: 14th century transitive verb to unite or make firm by or as if by ~, to overlay with concrete, intransitive verb to become ~ed, ~er noun