διθάλασσος

A. divided into two seas, of the Euxine, Str. 2.5.22, cf. D.P. 156; of the Atlantic, Str. 1.1.8.

II. between two seas, where two seas meet, as is often the case off a headland, Act.Ap. 27.41; βραχέα καὶ διθάλαττα shallows and meetings of currents, in the Syrtes, D.Chr. 5.9.