lead dioxide

noun

: a poisonous compound PbO2 used especially as an oxidizing agent and as an electrode in batteries

Examples of lead dioxide in a Sentence

Recent Examples on the Web
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Lead from the anode is mixed with nitric acid and the lead oxide (made from the lead dioxide cathode) is mixed in acetic acid. IEEE Spectrum, 19 Aug. 2014

Word History

First Known Use

1863, in the meaning defined above

Time Traveler
The first known use of lead dioxide was in 1863

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Cite this Entry

“Lead dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lead%20dioxide. Accessed 10 Jul. 2025.

Medical Definition

lead dioxide

noun
: a poisonous compound PbO2 used especially as an oxidizing agent and as an electrode in batteries

More from Merriam-Webster on lead dioxide

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