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.

    A Mind to Murder

  • Nagle had helped to control him while Baguley had called to Sister for paraldehyde.

    A Mind to Murder

  • 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.

    Scientific American Supplement, No. 623, December 10, 1887

  • 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: --

    Synthetic Tannins

  • 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.

    Recently Uploaded Slideshows

  • ‘suppository’ of diazepam, paraldehyde, or phenobarbital up the rectum

    1) Head Control and Use of Senses

  • 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.

    A Mind to Murder


Log in or sign up to get involved in the conversation. It's quick and easy.