περίτασις
From LSJ
δός μοι πᾷ στῶ καὶ τὰν γᾶν κινήσω → give me a place to stand and I will move the earth, give me a place to stand and I'll move the earth, give me the place to stand and I shall move the earth, give me a place to stand and with a lever I will move the whole world, give me a firm spot to stand and I will move the world, give me a lever and a place to stand and I will move the earth, give me a fulcrum and I shall move the world
English (LSJ)
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.CP4.12.11. 3 contraction, νεύρων Androm. ap. Gal.13.1036. (Dub. sens. in Vett.Val.14.2.)