from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless liquid polymer, C6H12O3, of acetaldehyde, used as a solvent and a sedative.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A cyclic trimer of acetaldehyde once used as an antidepressant.
from the GNU version of the Collaborative International Dictionary of English
- n. A trimer of acetaldehyde (C6H12O3), prepared by polymerization of acetaldehyde with hydrochloric and sulfuric acids. It has sedative and hypnotic properties.
from The Century Dictionary and Cyclopedia
- n. A colorless liquid with a disagreeable odor and taste, C6H12O3, obtained by treating aldehyde with sulphuric or hydrochloric acid. It is used in medicine as a hypnotic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solvent
Sorry, no etymologies found.
Acetaldehyde forms a trimer in the presence of acid catalysts such as sulphuric or phosphoric acid, to make paraldehyde, a pharmacological sedative.
But it is ethanol, not paraldehyde that most people are familiar with.
Quickly he put the screwdriver and the small blue bottle of paraldehyde in his jacket pocket and slipped out, lighting his way with the torch.
Nagle had helped to control him while Baguley had called to Sister for paraldehyde.
This was heated with paraldehyde, whereby it was converted into allylpyridine (48 grammes), and this by reduction with sodium yielded alpha-propylpyridine, a body in almost every respect identical with coniine.
In the naphthalene series, on the other hand, the ring closes up by, for instance, the condensation of [Greek: b] - naphthol with benzaldehyde or paraldehyde, and yields the following compounds: --
For in ﬂ ammatory bowel disease and Organic solvents are often used to enhance the proctitis, this is simply a topical administration. rate of absorption from subcutaneous or intramus - Diazepam and paraldehyde administered rect - cular sites of administration.
suppository of diazepam, paraldehyde, or phenobarbital up the rectum
He wondered briefly about the paraldehyde bottle and Jenny’s glass, but decided to leave them on the table with the note and the chisel.