n. [ Pref. met- + aldehyde. ] (Chem.) A white crystalline substance isomeric with, and obtained from, acetic aldehyde by polymerization, and reconvertible into the same. [ 1913 Webster ]
n. Acetic aldehyde. See Aldehyde. [ 1913 Webster ]
n. Acetic aldehyde. See Aldehyde. [ 1913 Webster ]