A chemical compound formed by the union of oxygen with another element, without hydrogen, but which, on exposure to water, absorbs hydrogen and…
| 单词 | θ69239 | 
| 释义 | the world > matter > chemistry > elements and compounds > 			[noun]		 > compounds > types (18)		 anhydride1863 A chemical compound formed by the union of oxygen with another element, without hydrogen, but which, on exposure to water, absorbs hydrogen and… quaternary1947 Chemistry. A quaternary ammonium compound, esp. one used as a disinfectant. Cf. sense B. 1b. clathrate1948 Chemistry. A clathrate compound. Subcategories:— 			compounds which are isologous			(1)		 — 			consisting of two elements			(3)		 — 			consisting of four elements			(1)		 — 			having constituents in 3:2 proportion			(1)		 — 			conjugated compound			(2)		 — 			compound which precedes another			(1)		 — 			compounds which have more than one acidic group			(1)		 — 			which can accept an electron pair from a donor compound			(1)		 — 			which forms the basis of various natural colouring matters			(1)		 — 			containing the substituted acrylate group CH2.C(CN).COO			(1)		 — 			an enantio-morphic compound			(1)		 — 			consisting of metal ions complexed with ligands			(1)		 | 
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