Last Updated：2025/11/23
(geography, geodesy) The shape, extending through landmasses (continents, etc.), 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.
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geoid
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Source Word
geoid
IPA(Pronunciation)
Noun
(geography,
geodesy)
The
shape,
extending
through
landmasses
(continents,
etc.),
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.
Japanese Meaning
地球の重力と自転の影響のみで決定され、海面がとるべき理想的な形状。具体的には、風や潮汐などの他の要因を除外し、重力ポテンシャルが一定となる面として考えられる。
Sense（1）
(geography,
geodesy)
The
shape,
extending
through
landmasses
(continents,
etc.),
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.
（ plural ）
