παρέκτασις
παρέκ-τᾰσις, εως, ἡ,
A). stretching out, extension, ἀέρος expanse, Ep. 2p.53U. (pl.); χρονικὴ π. M. 6.57 , cf. Theol.Ar. 52 (pl.); χρόνου ; 2.43 τῶν ἐπισημασιῶν Alex.Philalethesap. . 7.467
2). projection of the false ribs, Oss. 25 .