ethanal trimer, paraldehyde - a colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solvent

acetaldehyde, ethanal - a colorless volatile water-soluble liquid aldehyde used chiefly in manufacture of acetic acid and perfumes and drugs

organic compound - any compound of carbon and another element or a radical

formaldehyde, methanal - a colorless poisonous gas; made by the oxidation of methanol

furfural, furfuraldehyde - a liquid aldehyde with a penetrating odor; made from plant hulls and corn cobs; used in making furan and as a solvent

glyceraldehyde, glyceric aldehyde - a sweet crystalline aldehyde formed by the breakdown of sugars

propanal, propionaldehyde - a colorless liquid aldehyde

acrolein, propenal - a pungent colorless unsaturated liquid aldehyde made from propene