When something turns like a wheel, over and over again, it's in rotation. You can't feel the earth's rotation even though you know it's happening.

Even if you find the rotation of clothes in the dryer comforting, it's best to remain on the outside looking in. Rotation can also mean a series that repeats. A baseball team has a "pitching rotation" (five pitchers who take turns starting games), while a song that's on the radio every fifteen minutes is on "heavy rotation."

Primary Meanings of rotation

the act of rotating as if on an axis
a planned recurrent sequence (of crops or personnel etc.)
Full Definitions of rotation

n the act of rotating as if on an axis

“the rotation of the dancer kept time with the music”
rotary motion
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the act of turning or winding or folding around a central axis
feather, feathering
turning an oar parallel to the water between pulls
gyration, whirling
the act of rotating in a circle or spiral
the act of turning on (or as if on) a pivot
rotation of the hands and forearms so that the palms face downward
spin, twirl, twist, twisting, whirl
the act of rotating rapidly
flying downward in a helical path with a large radius
rotation of the hands and forearms so that the palms face upward
turn, twist
turning or twisting around (in place)
twist, wind, winding
the act of winding or twisting
(ballet) the outward rotation of a dancer's leg from the hip
a series of small (usually idle) twists or turns
(ballet) a rapid spin of the body (especially on the toes as in ballet)
birling, logrolling
rotating a log rapidly in the water (as a competitive sport)
Type of:
motility, motion, move, movement
a change of position that does not entail a change of location

n a single complete turn (axial or orbital)

“the plane made three rotations before it crashed”
gyration, revolution
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clockwise rotation, dextrorotation
rotation to the right
counterclockwise rotation, levorotation
rotation to the left
axial motion, axial rotation, roll
rotary motion of an object around its own axis
orbital motion, orbital rotation
motion of an object in an orbit around a fixed point
a swift whirling motion (usually of a missile)
spin (usually of a moving ball) that retards or reverses the forward motion
English, side
(sports) the spin given to a ball by striking it on one side or releasing it with a sharp twist
forward spin (usually of a moving ball) that is imparted by an upward stroke
an indolent or clumsy rolling about
Type of:
turn, turning
a movement in a new direction

n (mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin

Type of:
(mathematics) a function that changes the position or direction of the axes of a coordinate system

n a planned recurrent sequence (of crops or personnel etc.)

“crop rotation makes a balanced demand on the fertility of the soil”
“the manager had only four starting pitchers in his rotation
Type of:
chronological sequence, chronological succession, sequence, succession, successiveness
a following of one thing after another in time

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