ἔνστημα
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)
ατος, τό,
A objection, εἴς τι Epicur.Ep.2p.39U. II check, obstacle, Chrysipp.Stoic.2.268, M.Ant.8.41, S.E.M.7.253,al.
German (Pape)
[Seite 853] τό, das Hinderniß, bes. bei Stoikern, Plut. de Stoic. repugn. 57.