Chem. [f. BROM-INE + -IDE.] A primary compound of bromine with an element or organic radical. Several bromides (esp. those of ammonium, iron and potassium) are in common medicinal use.

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1836.  Penny Cycl., V. 461/1. Carbon and Bromine form a liquid bromide of carbon.

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1871.  B. Stewart, Heat, § 58. The same law holds good for the Bromides … of ethyle and methyle.

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1876.  Harley, Mat. Med., 204. Bromide of Iron acts as an energetic tonic.

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1881.  C. M. Beard, Sea-Sickness, 36. The great value of the bromides in very large doses, as harmless and powerful sedatives.

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  b.  familiarly for bromide of potassium (KBr).

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1883.  Mrs. H. M. Plunkett, in Harper’s Mag., Jan., 241/1. A little bromide completed the relief that put her asleep.

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  c.  attrib.

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1886.  Fagge, Princ. Med., II. 806. Bromide Rash.

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