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A colorless liquid polymer, C6H12O3, of acetaldehyde, used as a solvent and a sedative.


(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


(pəˈræl dəˌhaɪd)

a colorless liquid compound, C6H12O3, produced by polymerization of acetaldehyde, used in medicine as a rapidly acting sedative and hypnotic.
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


nParaldehyd nt
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.