What is the metallic element iron, the symbol of which was the same as that of the planet Mars. [Archaic] Chaucer. Mars brown, a bright, somewhat yellowish, brown called?

mars — (Alchemy) The metallic element iron, the symbol of which was the same as that of the planet Mars. [Archaic] Chaucer. Mars brown, a bright, somewhat yellowish, brown. (Webster's 1913.)

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