προδιορίζω
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν 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)
A limit or define beforehand, D.S.12.2, Alex.Aphr.in Top.146.17, al.; βραχέα π. περί τινος D.S.1.4:—Med., ib.5, Ph.1.442, Hermog.Id.1.1, Aps.p.247H. (also, make arrangements beforehand, Orib.45.18.17):—Pass., Ph.1.631.