| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024bro•mine /ˈbroʊmin, -mɪn/USA pronunciation n. [uncountable]- Chemistrya dark reddish liquid element obtained from ocean water and used chiefly in gasoline antiknock compounds.
WordReference Random House Unabridged Dictionary of American English © 2024bro•mine (brō′mēn, -min),USA pronunciation n. [Chem.]- Chemistryan element that is a dark-reddish, fuming, toxic liquid and a member of the halogen family: obtained from natural brines and ocean water, and used chiefly in the manufacture of gasoline antiknock compounds, pharmaceuticals, and dyes. Symbol: Br;
at. wt.: 79.909;
at. no.: 35;
sp. gr.: 3.119 at 20°C.
- Greek brômos stench) + -ine2
- French brome bromine (
- 1827
Collins Concise English Dictionary © HarperCollins Publishers:: bromine /ˈbrəʊmiːn -mɪn/ n - a pungent dark red volatile liquid element of the halogen series that occurs in natural brine and is used in the production of chemicals, esp ethylene dibromide. Symbol: Br; atomic no: 35; atomic wt: 79.904; valency: 1, 3, 5, or 7; relative density 3.12; density (gas): 7.59 kg/m³; melting pt: –7.2°C; boiling pt: 58.78°C
Etymology: 19th Century: from French brome bromine, from Greek brōmos bad smell + -ine², of uncertain origin |