Prō'e-gū'mi-nal, a.

a. [Fr. proégumène, from Gr. προηγούμενος, p. pr. of προηγείσθαι, to go first and lead the way, from πρό, before, and ἡγεῖσθαι, to go before, to lead the way.] (Med.) Serving to predispose; predisposing; as, a proeguminal cause of disease.