bromine

[broh-meen, -min]

noun

Chemistry.

1. an 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. Br; 79.909; 35; 3.119 at 20°C.

bromine

/ ˈbrəʊmiːn, -mɪn /

noun

1. 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

bromine

1. A reddish-brown volatile element of the halogen group found in compounds occurring in ocean water. The pure form is a nonmetallic liquid that gives off a highly irritating vapor. It is used to make dyes, sedatives, and photographic film. Atomic weight 79.904; atomic number 35; melting point 7.2°C; boiling point 58.78°C; specific gravity 3.12; valence 1, 3, 5, 7.

2. See Periodic Table

Word History and Origins

Origin of bromine¹

1827; < French brome bromine (< Greek brômos stench) + -ine ²

Word History and Origins

Origin of bromine¹

C19: from French brome bromine, from Greek brōmos bad smell + _-ine ², of uncertain origin

Example Sentences

In this process, the X-ray photons trigger a "molecular catapult effect": light atomic groups are ejected first, similar to projectiles fired from a catapult, while the heavier atoms -- bromine and chlorine -- separate more slowly.

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Occasionally, the ions also form toxic bromine gas.

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Researchers examined 203 consumer products for bromine, a key indicator of the use of flame retardants.

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Conventional methods to produce o-bromobenzenethiols involve addition of bromine to aniline, then using diazonium intermediates for addition of sulfur.

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"And then the bromine, which is part of the salt, actually penetrates into the three-dimensional layer in a controllable way."

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