ratiocinativus
From LSJ
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
Latin > English (Lewis & Short)
rătĭōcĭnātīvus: a, um, adj. id..
I In rhet., of or belonging to reasoning, syllogistic, ratiocinative: genus, Cic. Inv. 1, 13, 17: quaestio, Quint. 7, 1, 60: status, id. 7, 8, 3; cf. id. 3, 6, 46; 61; 5, 10, 6.—
II In gram.: ratiocinativa conjunctio, serving for inference, illative, as ergo, igitur, Diom. p. 410 P.