Is “Geoid” a Scrabble word?
Yes
GEOID
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Geoid
/ˈdʒiːɔɪd/
noun
1.(geodesy) The shape that the surface of the oceans of the Earth would take under the influence of the Earth's gravity and rotation alone, extending also through the continents, disregarding other factors such as winds and tides; that is, a surface of constant gravitational potential at zero elevation.