Mediterraneum, mediterranei, Substantiuum, n. g. cui opponitur Litus, seu Ora, siue Ora litoralis. Plin. The middle of the land: the part furthest from the sea.
Mediterráneus, Adiectiuum. Cæsa. In the middle of the land.Mediterraneum mare. Plin. The middle sea betwene Europe and Affrike.
Lewis and Short: Latin dictionary
mĕdĭ-terrānĕus, a, um, adj. [mediusterra], midland, inland, remote from the sea, mediterranean (opp. to maritimus). I.Adj. (class.): nascitur ibi plumbum album in mediterraneis regionibus, in maritimis ferrum, Caes. B. G. 5, 12, 5: locus (opp. maritimus), Quint. 5, 10, 37: homines maxime mediterranei, Cic. Verr. 2, 5, 27, 70: Enna mediterranea est maxime, id. ib. 2, 3, 83, 191: commercium, Plin. 5, 10, 11, 63: jurisdictiones, id. 5, 28, 29, 105: copiae, Plin. Ep. 2, 17, 28.—B. Esp., in late Lat.: Mediterraneum mare, the Mediterranean Sea, for Mare magnum, Isid. Orig. 13, 16.—II.Subst.: mĕdĭterrānĕum, i, n., the interior (post-Aug.): in mediterraneo est Segeda, Plin. 3, 1, 3, 10.—In plur.: mĕdĭterrānĕa, ōrum, n., the inland parts, interior of a country: Galliae, Liv. 21, 31, 2: in mediterraneis Hispaniae, Plin. 33, 12, 51, 158.