NAD

NAD

noun \ˌen-ˌā-ˈdē\

Definition of NAD

: a coenzyme C₂₁H₂₇N₇O₁₄P₂ of numerous dehydrogenases that occurs in most cells and plays an important role in all phases of intermediary metabolism as an oxidizing agent or when in the reduced form as a reducing agent for various metabolites—called also diphosphopyridine nucleotide, DPN, nicotinamide adenine dinucleotide