ἰσόκοιλος
From LSJ
ἡ δὲ φύσις φεύγει τὸ ἄπειρον· τὸ μὲν γὰρ ἄπειρον ἀτελές, ἡ δὲ φύσις ἀεὶ ζητεῖ τέλος → nature, however, avoids what is infinite, because the infinite lacks completion and finality, whereas this is what Nature always seeks
English (LSJ)
ον,
A with equal cavities, αὐλός Plu.2.1021a, Theo Sm.p.60 H.(pl.).
German (Pape)
[Seite 1264] gleich hohl, αὐλός Plut. de an. procr. e Tim. 12.