Etymology

areoid

A1R1E1O1I1D2

Today it means: 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. Full definition →

Ancient Greek Ἄρης
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The story

  1. Ancient Greek · derived from-ειδής“-oid”
  2. Ancient Greek · derived fromἌρης“Ares”
  3. English todayareoid

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.

Words from the same roots

Ancient GreekἌρης all →

aresareo-

Etymology from Wiktionary, CC BY-SA 4.0.