ἀνόρθωσις
From LSJ
μὴ ἐν πολλοῖς ὀλίγα λέγε, ἀλλ΄ ἐν ὀλίγοις πολλά → don't say little in many words, but much in a few words (Stobaeus quoting Pythagoras)
English (LSJ)
εως, ἡ,
A restoration, τειχῶν PRyl.157.13 (ii A.D.); = ἐπανόρθωσις, Ph.Fr.54 H.; f.l. in Plb.15.20.5, Corn.ND16.
German (Pape)
[Seite 241] , Verbesserung, Pol. 15, 20, nach mss.