Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
trans-mărīnus, a, um, adj., beyond sea, coming from beyond sea, transmarine: hospes, Plaut. Most. 2, 2, 66: gentes, Liv. 26, 24, 4: legationes, id. 40, 2, 6: vectigalia, Cic. Agr. 2, 29, 80: auxilia, Auct. B. Alex. 3, 5: res, Cic. Verr. 2, 5, 18, § 45; Caes. B. G. 6, 24: transmarina atque adventicia doctri na, i. e. jurisprudence, Cic. de Or. 3, 33, 135: peregrinatio, Quint. 7, 3, 31: provinciae, Sen. Ep. 17, 3.