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回転体 (かいてんたい) Japanese meaning | Kotomora

回かい転てん体たい

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Meanings

1

noun

solid of revolution

mathematics

Mathematical term for a 3D shape obtained by rotating a plane curve around an axis.

円えんを軸じくの周まわりに回かい転てんさせると回かい転てん体たいが得えられる。
Rotating a circle around an axis yields a solid of revolution.

Kanji

回-times, round, game
転revolve, turn around, change
体body, substance, object

Similar words

回かい転てん
回転 means 'rotation' or 'revolution' in general, while 回転体 specifically refers to the solid shape created by such rotation.

Etymology

Compound of 回転 (rotation) + 体 (body, solid). The term is a direct calque from the English mathematical term 'solid of revolution'.