paraldehydePronunciation: /pəˈraldɪhʌɪd/Definition of paraldehyde noun [mass noun] Chemistry a liquid made by treating acetaldehyde with acid, used medicinally as a sedative, hypnotic, and anticonvulsant. A cyclic trimer of acetaldehyde; chemical formula: (CH3CHO)3 paraldehyde in other Oxford dictionaries Definition of paraldehyde in the US English dictionary
