ἔντασις

A. inscribing, εἰς τὸν κύκλον Pl. Men. 87b.

II. tension, straining, τοῦ ὑποχονδρίου Hp. Epid. 3.1.β/; τοῦ σώματος Id. Aër. 4; τῶν ῥάβδων Id. Fract. 30; ὀφθαλμῶν fixed stare, prob. in Aret. CD 1.3 (pl.); distension, αἰδοίων Gal. 7.728.

2. exertion, Plu. 2.948b, Aret. SA 2.2; pl., retchings, Id. CD 2.13.

3. ἡ τοῦ προσώπου ἔ. the assumption of a serious face, Luc. Symp. 28; earnestness, περὶ ἑκάστου Porph. Abst. 1.54; strictness, νόμων PSorb. 675.14 (iii A. D.).

4. Arch., swelling in the outline of a column, Vitr. 3.3.13.