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.

Archĭmēdes, is (gen. Archimedi, Cic. Rep. 1, 14, 21; 1, 14, 22; cf. Schneid. Gr. II. 163 sq.; Rudd. I. p. 58, n. 71; Neue, Formenl. I. p. 333; acc. Archimeden, Cic. Verr. 4, 58, 131; Liv. 25, 31, 9: Archimedem, Cic. Tusc. 5, 23, 64; Neue, Formenl. I. p. 309 sq.), m., = Ἀρχιμήδης, a celebrated mathematician of Syracuse, who, with his burning-glasses, set fire to the ships of the Roman besiegers of his native city, Liv. 24, 34; Cic. Tusc. 1, 25, 63; id. Fin. 5, 19, 50; his monument, before unknown, was discovered by Cicero, id. Tusc. 5, 23.
Hence, Archĭmēdēus or -īus, a, um, adj., Archimedian: manus, Mart. Cap. 6, p. 191: loculus, Marc. Vict. p. 2547 P.