/pi roh"li deen', -din, -rol"i-/ , n. Chem.
a colorless, water-soluble, unpleasant smelling, poisonous liquid, C 4 H 9 N, from which proline and certain alkaloids are derived, prepared by reducing pyrrole: used chiefly in organic synthesis.
[ 1880-85; PYRROLE + -ID 3 + -INE 2 ]