πλάτυσμα
From LSJ
εἰ μὴ ἦλθον καὶ ἐλάλησα αὐτοῖς, ἁμαρτίαν οὐκ εἶχον → if I had not come and spoken to them, they would not be guilty of sin
English (LSJ)
ατος, τό,
A flat object, e.g. tile, Herod.3.46; slab, κηροῦ Dsc.Eup.1.171; metal plate, Hero Dioptr.5; χαλκοῦν Gal.12.831; plaster, Heliod. ap. Orib.46.29.3, Orib.Syn.2.59; flat cake, Gal.4.526; π. μυῶδες, a muscle discovered by Galen, 18(2).930; τὰ π. τῶν κωπῶν blades, Eust.1625.17.