εὐθενία
καὶ οἱ ἀμαθέστατοι τῶν ἰατρῶν τὸ αὐτὸ σοὶ ποιοῦσιν, ἐλεφαντίνους νάρθηκας καὶ σικύας ἀργυρᾶς ποιούμενοι καὶ σμίλας χρυσοκολλήτους: ὁπόταν δὲ καὶ χρήσασθαι τούτοις δέῃ, οἱ μὲν οὐδὲ ὅπως χρὴ μεταχειρίσασθαι αὐτὰ ἴσασιν → the most ignorant of doctors do the same as you, getting themselves ivory containers, silver cupping instruments, and gold-inlaid scalpels; but when it's time to use those things, they haven't the slightest notion of how to handle them
English (LSJ)
ἡ,
A = εὐθένεια 11 (q.v.), from which it cannot be distd. after ii B.C.: Ion. εὐθενίη () Epigr. in Rev.Phil.19.178 (i B.C.), Epigr.Gr.1036.19 (Nicomedia); εὐθενία is v.l. in Arist. Rh.1360b16, HA602a15 (v.l. εὐσθένεια, εὐθένεια), Porph. Gaur.16.2.—From ii A.D. εὐθένεια and εὐθενία begin to be confused with εὐθηνία.