sphere

英語（米国） (en-US) 英語（イギリス） (en-GB)

IPA（発音記号）

/sfɪə(ɹ)/

名詞

古語 歴史的 比喩的用法

(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 .

日本語の意味

（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。

英語の意味

(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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The geometer rolled a perfect sphere across the table to demonstrate symmetry.

幾何学者は対称性を示すために完璧な球体をテーブルの上で転がした。

詳細

意味（1）

(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 .

意味（2）

A spherical physical object; a globe or ball.

Of celestial bodies, first the sun, / A mighty sphere, he framed.

詳細

意味（3）

(astronomy, now rare) The apparent outer limit of space; the edge of the heavens, imagined as a hollow globe within which celestial bodies appear to be embedded.

Though cold and darkness longer hang somewhere, / Yet Phoebus equally lights all the Sphere.

詳細

意味（4）

(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).

ſooner ſhall the Sun fall from his Spheare, Than Tamburlaine be ſlaine or ouercome.

詳細

意味（5）

(mythology) An area of activity for a planet; or by extension, an area of influence for a god, hero etc.

意味（6）

(figuratively) The region in which something or someone is active; one's province, domain.

...while his sweet and gentle niece would be a charming companion for Francesca; and he thought, with a glow of affection long unfelt, that Lucy Aylmer must inevitably make a friend whose future kindness might add much to her happiness. Both were at present placed out of their sphere: but the one would in all probability have it greatly in her power to cherish and aid the other.

詳細

意味（7）

(geometry) The set of all points in three-dimensional Euclidean space (or n-dimensional space, in topology) that are a fixed distance from a fixed point .

意味（8）

(logic) The extension of a general conception, or the totality of the individuals or species to which it may be applied.

spheres （ plural ）