προθύω
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
English (LSJ)
fut.
A -θύσω E.Ion805, SIG548.11 (Delph., iii B.C.), Berl.Sitzb.1927.160 (Cyrene), -θύσομαι Ar.Th.38:—sacrifice or offer first, πρὸ πάντων θεῶν τῇ Ἑστίᾳ πρώτῃ Pl.Cra.401d; π. καὶ προμαντεύεσθαι Michel 995 D40 (Delph., iv B.C.); act as προθύτης, SIGl.c.: c. acc., τὴν θυγατέρα Plu.2.310d:—more freq. in Med., π. τῷ διὶ τὰ πέμματα take care that they are offered, CIG3599.24 (Assos); προεθύετο ταῖς Μούσαις ὁ βασιλεύς Plu.Lyc.21, cf. IG42(1).121.42 (Epid., iv B.C.), 2.1651: metaph., to have a person sacrificed or slaughtered before, J.BJ1.19.3, Luc. Tox.50, Charito 7.3, Hld.9.24. II sacrifice for or in behalf of, παιδός E.Ion 805; ὑπὲρ χθονὸς ἀρότου Id.Supp. 29. (Both senses in Ar.Th.38.)