(märz) noun Obs.
In medieval alchemy, iron. [after Mars, the planet]

(märz)
1. In Roman mythology, the god of war: identified with the Greek Ares: formerly called Mavors.
2. Astron. The fourth planet in order of distance from the sun, from which its mean distance is 141,500,000 miles, its least distance from the earth being about 35,000,000 miles. Mars has two satellites, a diameter of about 4,230 miles, a diurnal rotation of 24 hours, 37 minutes, 22.67 seconds, and a year of 686.9 days.