areoid

== English == === Etymology === From areo- (“Mars”) +‎ -oid (“like”). From Ancient Greek Ἄρης (Árēs, “Ares”), the Greek God of War, equivalent to the Roman God of War Mars (“Mars”), synonymous use for the Red Planet; and Ancient Greek -ειδής (-eidḗs, “-oid”) suffix. Coined in analogy to geoid, the equivalent for planet Earth. === Noun === areoid (plural areoids) (astronomy, geology, planetology) The analogue of the geoid for the planet Mars; the Martian geoid. The gravitational and rotational equipotential surface for Mars. The surface that provides the datum line (the equivalent for sea level) for Mars. ==== Synonyms ==== Martian geoid Mars geoid ==== Hypernyms ==== geoid (used in the generic sense) ==== Coordinate terms ==== geoid (Earth) aphroditoid (Venus) ==== Translations ==== === Anagrams === roadie