pentoxide

noun

pent·​ox·​ide pent-ˈäk-ˌsīd How to pronounce pentoxide (audio)
: an oxide containing five atoms of oxygen in the molecule

Examples of pentoxide in a Sentence

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Talking about progress and votes and Bolshevism and every year allowing a million tons of phosphorus pentoxide to run away into the sea. —Suwanna Gauntlett Upjohn, Forbes.com, 21 July 2025

Word History

Etymology

International Scientific Vocabulary

First Known Use

1851, in the meaning defined above

Time Traveler
The first known use of pentoxide was in 1851

Phrases Containing pentoxide

Rhymes for pentoxide

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Browse Nearby Words

Pentothal
pentoxide
Pentremites
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Cite this Entry

“Pentoxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pentoxide. Accessed 30 Jul. 2025.

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Medical Definition

pentoxide

noun
pent·​ox·​ide pent-ˈäk-ˌsīd How to pronounce pentoxide (audio)
: an oxide containing five atoms of oxygen in the molecule see iodine pentoxide
Last Updated: - Updated example sentences
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