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WordReference Random House Unabridged Dictionary of American English © 2024ro•ta•tion (rō tā′shən),USA pronunciation n. - the act of rotating;
a turning around as on an axis. - Astronomy
- the movement or path of the earth or a heavenly body turning on its axis.
- one complete turn of such a body.
- regularly recurring succession, as of officials.
- AgricultureSee crop rotation.
- Mathematics
- an operation that rotates a geometric figure about a fixed point.
- curl (def. 17).
- Games[Pool.]a game in which the balls are played in order by number.
- Sport[Baseball.]See pitching rotation.
- Latin rotātiōn- (stem of rotātiō) a rotation, rolling, equivalent. to rotāt(us) (see rotate1) + -iōn- -ion
- 1545–55
ro•ta′tion•al, adj. Collins Concise English Dictionary © HarperCollins Publishers:: rotation /rəʊˈteɪʃən/ n - the act of rotating; rotary motion
- a regular cycle of events in a set order or sequence
- a planned sequence of cropping according to which the crops grown in successive seasons on the same land are varied so as to make a balanced demand on its resources of fertility
- a circular motion of a configuration about a given point or line, without a change in shape
- a transformation in which the coordinate axes are rotated by a fixed angle about the origin
roˈtational adj WordReference Random House Learner's Dictionary of American English © 2024ro•tate1 /ˈroʊteɪt/USA pronunciation v., -tat•ed, -tat•ing. v. - to (cause to) turn on an axis;
revolve: [no object]The earth rotates once every twenty-four hours.[~ + object]rotating the Frisbee on his finger. - to (cause to) proceed in a fixed routine, as in a cycle: [no object]The firefighters rotate in shifts: one week in the Bronx, the next week in Brooklyn.[~ + object]to rotate crops.
ro•ta•tion, n. [countable* uncountable]See -rota-. WordReference Random House Unabridged Dictionary of American English © 2024ro•tate1 (rō′tāt or, esp. Brit., rō tāt′),USA pronunciation v., -tat•ed, -tat•ing. v.t. - to cause to turn around an axis or center point;
revolve. - Agricultureto cause to go through a cycle of changes;
cause to pass or follow in a fixed routine of succession:to rotate farm crops. - to replace (a person, troops, etc.) by another or others, usually according to a schedule or plan.
v.i. - to turn around on or as if on an axis.
- to proceed in a fixed routine of succession:The sentries rotated in keeping watch.
- Latin rotātus (past participle of rotāre to cause to spin, roll, move in a circle), equivalent. to rot(a) wheel + -ātus -ate1
- 1800–10
ro′tat•a•ble, adj. ro′tat•a•bly, adv. - 1.See corresponding entry in Unabridged wheel, whirl. See turn.
ro•tate2 (rō′tāt),USA pronunciation adj. - Botanywheel-shaped: applied esp. to a gamopetalous short-tubed corolla with a spreading limb. See illus. under corolla.
- Latin rot(a) wheel + -ate1
- 1775–85
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