Main Entry: NAD

Pronunciation: \ˌen-(ˌ)ā-ˈdē\

Function: noun

Etymology: nicotinamide adenine dinucleotide

Date: circa 1962

: 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 nicotinamide adenine dinucleotide, diphosphopyridine nucleotide, DPN