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rotation

rotation

58 2.8
Turning around a central point, for example the Earth spinning once
  • noun
  • /roʊˈteɪʃən/
: rotación
  • The rotation of the Earth causes day and night as it spins on its axis.
  • Earth's rotation
  • rotation period
  • axis of rotation

You come up backwards, three full somersault rotations and then come back down forward.

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Examples

  • The Moon slowed the rotation of the Earth, finally giving the thirty-six hour day.

    Fiction book (2000)
  • How can you force the rotation of an entire planet?

  • Because of the Earth's rotation.

  • Angular momentum is the measure of the rotation of an object about an axis.

    Academic text (1992)
  • Due to earth's rotation, we're in line with Vega only hours a day.

  • As early as 1939, Milton Humason had studied the rotation of the main part of the galaxy.

    Academic text (1993)
  • Astronomers study the rotation of planets to understand their atmospheres and climates.

  • Due to the rotation of the Earth, different parts of the world experience varying seasons.

Synonyms

turn
vsrotation
466 1.0

A change of direction in a road or path

refers to the ongoing process rather than a single brief change of direction
spin
vsrotation
121 1.1

A quick turning movement of an object or person

is the general process and does not insist on rapid speed
turning
vsrotation
36 2.5

A change of direction in a road or path

is more specific about movement around an axis rather than general position changes
pivot
vsrotation
16 4.0

A turn of the body made by keeping one foot in place

focuses on a single fixed point rather than the general ongoing process
revolution
vsrotation
  • Specialized
13 3.5

One complete turn around a central point, like a planet or wheel

is the ongoing process rather than a single complete circuit
twisting
vsrotation
12 2.4

Turning something around quickly so it spins

is the neutral process and does not require speed or force
gyration
vsrotation
1 8.0

One complete turn, like a wheel or a dancer

is the ongoing process instead of one isolated circuit
rotary motion
vsrotation
  • Specialized
1 3.6

Movement in which something spins around a fixed line

is the general single word name for the same circular movement
circumvolution
vsrotation
  • Specialized
1 9.9

A twist or coil around a middle point, like a spiral staircase

focuses on winding or folding rather than simple circular movement around an axis

Compounds

axis of rotation
  • Specialized
1 4.3

A straight line that an object turns around

A movement that turns in the same direction as the hands of a clock

orbital rotation
  • Specialized
1 7.0

An object moving in a curved path around another object, not spinning on itself

A movement that turns to the left, the opposite direction of a clock's hands

axial rotation
  • Specialized
1 6.5

Turning of an object around a line through its middle

How Fast

whirl
12 3.7
spin
121 1.1
rotation
58 2.8
turn
466 1.0
stillness
35 3.5

Surface Forms

rotation singular
rotations plural

Morphology

rotation = rotate (transparent) = rotate + ion

The noun is a regular -ion nominalization of the verb 'rotate', denoting the act or process of turning; this is straightforward for learners.

Etymology

Rotation comes from the Latin root rotare, from rota meaning 'wheel', and originally meant 'to turn'. Picture the Earth as a wheel turning around its center, and you can see why a rotation is a full turn.