• synonyms


[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. Symbol: Br; atomic weight: 79.909; atomic number: 35; specific gravity: 3.119 at 20°C.
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Origin of bromine

1827; < French brome bromine (< Greek brômos stench) + -ine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for bromine

Historical Examples

  • He named it bromine (stench) because of its unbearable fumes.

    An Elementary Study of Chemistry

    William McPherson

  • Bromine is a dark red liquid about three times as heavy as water.

  • The United States is independent of foreign sources for bromine.

  • These acids readily combine with bromine, iodine, or oxygen.

  • Bromine water does not precipitate pyrogallols, but causes a precipitate with catechols.


    K. J. Adcock

British Dictionary definitions for bromine


  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
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Word Origin

C19: from French brome bromine, from Greek brōmos bad smell + -ine ², of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bromine


nonmetallic element, 1827, from French brome, from Greek bromos "stench." With chemical suffix -ine (2). The evil-smelling dark red liquid was discovered by French chemist Antoine Jérôme Balard (1802-1876), who initially called it muride.

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Online Etymology Dictionary, © 2010 Douglas Harper

bromine in Medicine


n. Symbol Br
  1. A volatile nonmetallic liquid element having a highly irritating vapor and used in disinfecting water and in various pharmaceuticals. Atomic number 35.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

bromine in Science


  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. See Periodic Table.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.