martial: [14] Latin mārtiālis denoted ‘of Mars, the god of war’ (his name goes back to an early Latin Māvors). In its journey via Old French to English it acquired the meaning ‘of war’. The application of the name Mars to the red planet dates back to Roman times, as does the adjective Martian [14] (from Latin Mārtiānus), which in modern English refers exclusively to the astronomical Mars. The god also gave his name to the first month of the Roman calendar – whence English March. => mars[martial etymology, martial origin, 英语词源]