Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Thĕmistŏcles, i and is, m., = Θεμιστοκλῆς, a celebrated Athenian commander, whose life is written by Nepos; cf. Cic. de Or. 2, 74, 300; 2, 86, 351; 3, 16, 59; id. Rep. 1, 3, 5; id. Att. 7, 11, 3; id. Tusc. 4, 19, 44; id. Fin. 3, 32, 104; Nep. Them. 1, 1 sqq.
Hence, Thĕmistŏclēus, a, um, adj., of or belonging to Themistocles: consilium, Cic. Att. 10, 8, 4: exsilium, id. ib. 10, 8, 7.