n. (Med.) A medicine that discusses or disperses morbid humors; a discutient. [ 1913 Webster ]

a. [ Cf. F. discussif. ] 1. (Med.) Able or tending to discuss or disperse tumors or coagulated matter; discutient. [ 1913 Webster ]

2. Doubt-dispelling; decisive. [ R. ] [ 1913 Webster ]

A kind of peremptory and discussive voice. Hopkins. [ 1913 Webster ]