Last Updated:2025/11/19
(mathematics) A regular three-dimensional object in which every cross-section is a circle; the figure described by the revolution of a circle about its diameter .
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sphere
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Source Word
sphere
IPA(Pronunciation)
Noun
archaic
historical
figuratively
Japanese Meaning
(数学)すべての断面が円となる正規な三次元物体、すなわち円を直径周りに回転させて得られる図形、つまり球体を指す。
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(historical,
astronomy,
mythology)
Any
of
the
concentric
hollow
transparent
globes
formerly
believed
to
rotate
around
the
Earth,
and
which
carried
the
heavenly
bodies;
there
were
originally
believed
to
be
eight,
and
later
nine
and
ten;
friction
between
them
was
thought
to
cause
a
harmonious
sound
(the
music
of
the
spheres).
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( plural )