(ˌ)dīˌfäsfōˈpirəˌdēn- noun
Etymology: diphosphopyridine from di- + phosph- + pyridine
: a coenzyme C 21 H 27 N 7 O 14 P 2 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 codehydrogenase I, coenzyme I, cozymase, DPN ; compare pyridine nucleotide