ἐξαιχμαλωτίζω
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
German (Pape)
[Seite 865] zum Gefangenen machen, Sp.
Greek (Liddell-Scott)
ἐξαιχμᾰλωτίζω: αἰχμαλωτίζω, Ἰω. Χρυσ. Ι. 698D, Νικήτ. Χρον. 51C.