περίτασις

εως, ἡ
A. extension all round, Plu. 2.1003d.
II. distension, κοιλίης, τοῦ δέρματος, Hp. Prorrh. 1.99, Epid. 4.55 ; μαστῶν Dsc. 3.34.
2. tight fit, Thphr. CP 4.12.11.
3. contraction, νεύρων Androm. ap. Gal. 13.1036. (Dub. sens. in Vett.Val. 14.2.)
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project