Lewis Short
(adjective) = μάγνης: magnes, ētis, m., = , with or without lapis
* A magnet, loadstone: (lapis), quem magneta vocant patrio de nomine Grai Magnetum quia sit patriis in finibus ortus,Lucr. 6, 908; cf. Plin. 36, 16, 25, § 126: lapis,Lucr. 6, 1046; Cic. Div. 1, 39, 86.—Without lapis, Sil. 3, 265.—Hence, : magnētĭcus, a, um, magnetic: gemma,Claud. de Magnet. 26.
Charlton T. Lewis, Charles Short, A Latin Dictionary