副醋; 副醛; 三聚乙醛
Paraldehyde \Par*al"de*hyde\, n. [Pref. para- + aldehyde.] (Chem.) A polymeric modification of aldehyde obtained as a white crystalline substance.
paraldehyde n : a colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solvent [syn: {ethanal trimer}]