lead dioxide

American

[led] / lɛd /

noun

Chemistry.

a brown crystalline compound, PbO 2 , toxic, insoluble in water and alcohol, soluble in glacial acetic acid: used as an oxidizing agent, in lead-acid batteries, and in analytical chemistry.

Etymology

Origin of lead dioxide

First recorded in 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It was 1859 before we got the first rechargeable battery, made from lead, lead dioxide and sulphuric acid.

From BBC • Apr. 30, 2017

Its presence may be detected in the estimation of the copper electrolytically, the platinum spiral becoming coated with a brown or black deposit of lead dioxide.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

When acted on by nitric acid a brown residue of lead dioxide is left, nitrate of lead going into solution.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The manganese dioxide may be replaced by various other substances, such as red lead, lead dioxide, potassium bichromate, and potassium permanganate.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023