Definition from Wiktionary, the free dictionary
- (Received Pronunciation) IPA(key): /ˈdʒiːɔɪd/
- (General American) IPA(key): /ˈdʒiˌɔɪd/
- Hyphenation: ge‧oid
geoid (plural geoids)
- (geography (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, disregarding other factors such as winds and tides; that is, a surface of constant gravitational potential at zero elevation.
surface of constant gravitational potential at zero elevation