Cement



GRE 蓝宝 考研

解释

GRE 红宝书

• n. 水泥; 胶粘剂
• ［英］ 水泥 ( grey powder, made by burning lime and clay, that sets hard after mixing with water)
• ［类］ 反义词: fracture ( 破裂)

Webster Collegiate

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.
  • a. concrete
  • b. 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; also any mixture used for a similar purpose
• 2. a binding element or agency: as
  • a. a substance to make objects adhere to each other
  • b. something serving to unite firmly <justice is the cement that holds a political community together — R. M. Hutchins
• 3. cementum
• 4. a plastic composition made especially of zinc or silica for filling dental cavities
• 5. the fine-grained groundmass or glass of a porphyry

II. verb

• Date: 14th century
• transitive verb
  • 1. to unite or make firm by or as if by cement
  • 2. to overlay with concrete
• intransitive verb
  • to become cemented
• ? cementer noun

---