aldehydic definition
Definition of ALDEHYDE. : acetaldehyde; broadly: any of a class of highly reactive organic compounds that are analogous to acetaldehyde and characterized by a carbonyl group attached to a hydrogen atom. â alÂ·deÂ·hyÂ·dic \Ëal-dÉ-ËhÄ«-dik\ adjective.ADVERTISEMENT. acetaldehyde; broadly: any of a class of highly reactive organic compounds that are analogous to acetaldehyde and characterized by a carbonyl group attached to a hydrogen atom. â alÂ·deÂ·hyÂ·dic \Ëal-dÉ-ËhÄ«-dik\ adjective. ADVERTISEMENT.