/pan"teuh then"ik, pan'-/ , Biochem.
a hydroxy acid, C 9 H 17 O 5 N, found in plant and animal tissues, rice, bran, etc., that is part of the B complex of vitamins and is essential for cell growth.
[ 1930-35; pántothen from all quarters ( panto- PANTO- + -then suffix of motion from) + -IC ]