chlorine monoxide

noun

: a reactive monovalent radical ClO that plays a major role in stratospheric ozone depletion

Word History

First Known Use

1965, in the meaning defined above

Time Traveler
The first known use of chlorine monoxide was in 1965

Rhymes for chlorine monoxide

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Browse Nearby Words

chlorine dioxide
chlorine monoxide
chlorine water
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Cite this Entry

“Chlorine monoxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chlorine%20monoxide. Accessed 9 Jul. 2025.

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