προκατασκευή
ἡ
A.
preparatory training, περὶ τοὺς ῥυθμούς Plb. 9.20.7; preparation, στρατηγήματος v.l. in J. BJ 2.21.3.
2.
preface, introduction, Plb. 1.3.10, 1.13.7, etc.
3.
Rhet., preliminary expose of the main points in an argument, Hermog. Inv. 3.1, al.