Definition of geopotential in US English:

geopotential

noun

Atmospheric Physics Geology
  • The work that must be done against gravity to raise a unit mass to a given height above sea level; the gravitational potential attributable to the earth's gravitational field.

Origin

Early 20th century. From geo- + potential.

Pronunciation

geopotential

/ˈdʒiːə(ʊ)pəˌtɛnʃl/