(|)trī|fäsfō+...- noun
Etymology: tri- + phosph- + pyridine
: a coenzyme C 21 H 28 N 7 O 17 P 3 of numerous dehydrogenases (as that acting on glucose 6-phosphate) that occurs especially in red blood cells and plays a role in intermediate metabolism similar to that of diphosphopyridine nucleotide but acting often on different metabolites — called also codehydrogenase II, coenzyme II, TPN