σχάσις
From LSJ
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)
[ᾰ], εως, ἡ,
A slitting of a tree, [τὸ κόμμι] ῥέει καὶ πληγείσης καὶ αὐτόματον ἄνευ σχάσεως (cj. for σχίσεως) Thphr.HP4.2.8. 2 venesection, Aret.CA1.10 (pl.), 2.3. 3 release, letting off, of an engine, Ph.Bel.77.1.
