mĕlanchŏlĭcus, a, um, adj., = μελαγχολικός,
having black bile, atrabilious, melancholy : Aristoteles quidem ait, omnes ingeniosos melancholicos esse, Cic. Tusc. 1, 33, 80; cf. id. Div. 1, 37, 81: insania, Plin. 22, 25, 64, § 133: vertigines, id. 27, 12, 105, § 130.
melancholicus adj. , μελαγχολικός, with black bile, melancholy. ...
An Elementary Latin Dictionary