ἔκτηξις
From LSJ
Πρόσεχε τῷ ὑποκειμένῳ ἢ τῇ ἐνεργείᾳ ἢ τῷ δόγματι ἢ τῷ σημαινομένῳ. → Look to the essence of a thing, whether it be a point of doctrine, of practice, or of interpretation.
English (LSJ)
εως, ἡ,
A melting away: hence, attenuation, φλεβῶν Hp. Aër.10 (v.l. ἔκτασιν). II cancelling of contract, BCH37.91 (Beroea).