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Pronunciation varies by accent · noun
(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..
Use areoid when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Areoid means (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..
Common synonyms include Martian geoid, Mars geoid.
The opposite depends on the specific sense.
Use areoid where its definition matches the intended context.
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