potassium bromide

American  

noun

Chemistry.

1. a white, crystalline, water-soluble powder, KBr, having a bitter saline taste: used chiefly in the manufacture of photographic papers and plates, in engraving, and in medicine as a sedative.

---

potassium bromide British  

noun

1. a white crystalline soluble substance with a bitter saline taste used in making photographic papers and plates and in medicine as a sedative. Formula: KBr

---

Etymology

Origin of potassium bromide

First recorded in 1870–75

Example Sentences

Some bromide salts, notably potassium bromide, were found to be natural sedatives, and were prescribed in the 19th Century as a remedy for epilepsy.

From BBC • Sep. 26, 2014

Before using, add one drop of ten per cent solution of potassium bromide to each ounce of the solution.

From The Scrap Book, Volume 1, No. 1 March 1906 by Various

Notes Toward the end of the reaction, a crust of potassium bromide may tend to cover the melted potassium hydroxide.

From Organic Syntheses by Conant, James Bryant

The relation of the gold to the potassium bromide, as well as the amounts of silver and silver bromide which are equivalent to the potassium bromide, were determined.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" by Various

But the best of the lot is a solution of the two substances potassium ferricyanide and potassium bromide, which forms an image of silver ferrocyanide and silver bromide.

From Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements by Tennant, John A.