paraldehyde Meaning, Definition & Usage

  1. noun a colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solvent
    ethanal trimer.

WordNet

Par*al"de*hyde noun
Etymology
Pref. para- + aldehyde.
Definitions
  1. (Chem.) A polymeric modification of aldehyde obtained as a white crystalline substance.

Webster 1913