πυρακτέω
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 turn in the fire: hence, harden in the fire, char, Od.9.328. II burn, Nic.Th.688.
German (Pape)
[Seite 819] im Feuer herumdrehen, u. so anglühen, härten, ἐπυράκτεον ἐν πυρὶ κηλέῳ, Od. 9, 328; vgl. Plut. amat. 17; anzünden, -brennen, Nic. Th. 688.