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Thrăsymăchus, i, m., = Θρασύμαχος, a celebrated Grecian sophist of Chalcedon, Cic. de Or. 3, 16, 59; 3, 32, 128; id. Or. 12, 39; 13, 40; id. Brut. 8, 30; Quint. 3, 1, 10; 3, 3, 4; Juv. 7, 204 (where Ritschl, in Rhein. Mus. Neue Folge, 9, p. 480, reads Tharsymachi; many MSS. have Thresimachi).