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A colorless liquid polymer, C6H12O3, of acetaldehyde, used as a solvent and a sedative.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) a colourless liquid substance that is a cyclic trimer of acetaldehyde: used in making dyestuffs and as a hypnotic and anticonvulsant drug. Formula: (C2H4O)3
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(pəˈræl dəˌhaɪd)

a colorless liquid compound, C6H12O3, produced by polymerization of acetaldehyde, used in medicine as a rapidly acting sedative and hypnotic.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.paraldehyde - a colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solvent
aldehyde - any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


nParaldehyd nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
The bag contained anti-seizure drug Paraldehyde in a 50ml brown bottle with a white safety cap, and a 7.5ml syringe of Midazomal.
After she can speak again, she has the temerity to complain about headaches, so the nurses stick a tongue depressor into her mouth and pour paraldehyde down her throat, which (paradoxically) causes an epileptic seizure.
The use of sedatives, chloral hydrate and paraldehyde, were preferable to opiates that should be avoided.
Of those, isoniazid and paraldehyde act via specific mechanisms such as interference at the level of CNS receptors and ion channel function, depletion of GABA (isoniazid), impairment of the propagation of electrical activity in the CNS (paraldehyde), and inflammation of the GI mucosa (paraldehyde) (Gilman, 1985; Carpentier et al., 1992).
It proposed some drugs that cause halitosis; lithium salts, penicillamine, griseofulvin, thiocarbamide, dimethylsulfoxide, ethyl alcohol, antihistaminics, diuretics, phenothiazines derivatives, tranquilizers, choral hydrate, nitrites and nitrates, amphetamines, paraldehyde, suplatatosilate, bisphosphonates, metronidazole, arsenic salts (9).
In the latter study, the large neurons were the ones staining stronger both with paraldehyde fuchsin and against serotonin, which is in accordance with the present observation in neurons of Scrobicularia plana.
The inmate of Kirkdale Homes was believed to have drunk toxic paraldehyde while at Walton Hospital.
* Waugh switched medication from chloral and bromide to paraldehyde after his Pinfold episode; he risked depression by combining it with alcohol.