1
: a pungent colorless oily aldehyde CCl3CHO used in making DDT and chloral hydrate
2

Examples of chloral in a Sentence

Recent Examples on the Web
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In poor health and afflicted with chronic insomnia, Waugh took nightly sleeping draughts of bromide and chloral, washed down with crème de menthe. — Christopher Buckley, WSJ, 2 Sep. 2022

Word History

Etymology

French, from chlor- + alcool alcohol

First Known Use

1838, in the meaning defined at sense 1

Time Traveler
The first known use of chloral was in 1838

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Cite this Entry

“Chloral.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chloral. Accessed 27 Sep. 2026.

Medical Definition

1
: a pungent colorless oily aldehyde C2HCl3O used in making DDT and chloral hydrate
2

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