chloral

[klawr-uhl, klohr-]
noun
1.
Also called trichloroacetaldehyde, trichloroacetic acid aldehyde. a colorless, oily liquid, C 2 Cl 3 HO, having a pungent odor, usually derived by the chlorination of ethyl alcohol or of acetaldehyde and combining with water to form chloral hydrate.
2.
Also called chloral hydrate. Pharmacology. a white, crystalline solid, C 2 H 3 Cl 3 O 2 , formed by combining liquid chloral with water: used as a hypnotic.

Origin:
1825–35; chlor-2 + -al3

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
chloral (ˈklɔːrəl)
 
n
1.  a colourless oily liquid with a pungent odour, made from chlorine and acetaldehyde and used in preparing chloral hydrate and DDT; trichloroacetaldehyde
2.  short for chloral hydrate

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences for chloral
Chloral hydrate is produced from chlorine and ethanol in acidic solution.
Chloral hydrate is a schedule iv controlled substance in the united states.
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