- the movement or path of the earth or a heavenly body turning on its axis.
- one complete turn of such a body.
- rotary valve,
- rotary wing,
- rotation axis,
- rotation flap,
- rotation of axes,
- rotation vector,
- rotation-inversion axis
Origin of rotation
Examples from the Web for rotation
Following one week of “R&R,” the team will spend one more six-week rotation in the ETU before entering a three-week isolation.
"Palmer always keeps his word," beamed Weaver, putting the right hander back in the rotation.
Others who will join the rotation include Alan Alda, Candice Bergen, Stacy Keach, and Carol Burnett.Fall Broadway Preview: 'This Is Our Youth,' Bradley Cooper as ‘The Elephant Man,' and More|Janice Kaplan|September 11, 2014|DAILY BEAST
Of course, that relates to the other rotation of the spin herethat she was difficult and demanding.The Hypocrisy Behind The New York Times’s Abrupt Decapitation of Jill Abramson|Robert Shrum|May 18, 2014|DAILY BEAST
Ten stand, eight sleep, then eight different men sleep, all in a rotation.Al Jazeera Journo Abdullah El-Shamy Goes On Hunger Strike In Egyptian Jail|Jonathan Krohn|March 29, 2014|DAILY BEAST
In other words, it was entirely independent of the earth and its rotation.A Popular History of Astronomy During the Nineteenth Century|Agnes M. (Agnes Mary) Clerke
The success of the potato is largely dependent on the crops preceding it in the rotation.
With the sweet potato, as with other crops, rotation is the keynote of success.
We say, then, that the wind in a storm is not in rotation, and it is a dangerous doctrine to teach the navigator.Outlines of a Mechanical Theory of Storms|T. Bassnett
Dancing masters held their classes in rotation at the great plantation houses.
- 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
- another name for curl (def. 11) Abbreviation (for sense 4c): rot
- the spinning motion of a body, such as a planet, about an internal axisCompare revolution (def. 5a)
- one complete turn in such motion
1550s, from Latin rotationem (nominative rotatio) "a turning about in a circle," noun of action from past participle stem of rotare "turn round, revolve, whirl about, roll," from PIE *roto- (see rotary).