Noun, Suru verb, Intransitive verb
1. rotation; revolution; turn; spin
Noun, Suru verb, Intransitive verb
2. working (e.g. of one's mind); function
Noun, Suru verb, Intransitive verb
3. turnover (of goods, funds, etc.); circulation; flow (of customers)
Noun, Suru verb, Intransitive verb
4. rotation; curlMathematics
5. slalomSkiing, Abbreviation, See also 回転競技
Wikipedia definition
6. RotationA rotation is a circular movement of an object around a center of rotation. A three-dimensional object rotates always around an imaginary line called a rotation axis. If the axis is within the body, and passes through its center of mass the body is said to rotate upon itself, or spin. A rotation about an external point, e.g. the Earth about the Sun, is called a revolution or orbital revolution, typically when it is produced by gravity.
Read “Rotation” on English Wikipedia
Read “回転” on Japanese Wikipedia
Read “Rotation” on DBpedia
Other forms
廻転 【かいてん】
廻転: Rarely-used kanji form.


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