paraldehyde

noun Chemistry, Pharmacology.

1. a colorless, liquid, cyclic compound, C6H12O3, having a disagreeable taste but an agreeable odor, produced by the polymerization of acetaldehyde with sulfuric acid: used chiefly in the manufacture of organic chemicals and in medicine as a sedative and hypnotic.

noun

1. a colourless liquid substance that is a cyclic trimer of acetaldehyde: used in making dyestuffs and as a hypnotic and anticonvulsant drug. Formula: (C 2 H 4 O) 3

n.

1. A potent hypnotic and sedative suitable for oral, rectal, intravenous, and intramuscular administration.paracetaldehyde