In English, the planet Mars is named after Mars, the Roman god of war,[1] an association made because of its red color, which suggests blood.[2] The adjectival form of Latin Mars is Martius,[3] from which the English word Martian derives, used as an adjective or for a putative inhabitant of Mars, and Martial, used as an adjective corresponding to Terrestrial for Earth.[4] In Greek, the planet is known as Ἄρης Arēs, with the inflectional stem Ἄρε- Are-.[5] That is because of the Greek equivalent to Mars is Ares. From this come technical terms such as areology, as well as the (rare) adjective Arean[6] and the star name Antares.
Mars is also the basis of the name of the month of March (from Latin Martius mēnsis 'month of Mars'),[7] as well as of Tuesday (Latin dies Martis 'day of Mars'), where the old Anglo-Saxon god Tíw was identified as the Anglo-Saxon equivalent to Mars by Interpretatio germanica.[8]
Due to the global influence of European languages in astronomy, a word like Mars or Marte for the planet is common around the world, though it may be used alongside older, native words. A number of other languages have provided words with international usage. For example: