bro·mine

[broh-meen, -min]
noun Chemistry.
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.
Origin:
1827; < French brome bromine (< Greek brômos stench) + -ine2

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Bromine is always a great word to know.
So is interrobang. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
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Collins
World English Dictionary
bromine (ˈbrəʊmiːn, -mɪn) [Click for IPA pronunciation guide]
 
—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
 
[C19: from French brome bromine, from Greek brōmos bad smell + -ine², of uncertain origin]

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Etymonline
Word Origin & History

bromine
nonmetallic element, 1827, from Fr. brome, coined by its discoverer, Fr. chemist Antoine Jérôme Balard (1802-1876) from Gk. bromos "stench." With chemical suffix -ine.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

bromine bro·mine (brō'mēn)
n.
Symbol Br
A volatile nonmetallic liquid element, having a highly irritating vapor. It is used in gasoline antiknock mixtures and photographic chemicals. 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.

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American Heritage
Science Dictionary
bromine   (brō'mēn)  Pronunciation Key 
Symbol Br
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences from the web
Chlorine is also used in the production of chlorates and in bromine extraction.
The seaweed was used to produce iodine, but also contained bromine.
Several of the heavier bromine isotopes from fission are delayed neutron
  emitters.
All of the radioactive bromine isotopes are relatively short lived.
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