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Webster 1913 Edition

Rotation

Ro-ta′tion

,
Noun.
[L.
rotatio
: cf. F.
rotation
.]
1.
The act of turning, as a wheel or a solid body on its axis, as distinguished from the progressive motion of a revolving round another body or a distant point; thus, the daily turning of the earth on its axis is a rotation; its annual motion round the sun is a revolution.
2.
Any return or succesion in a series.
Moment of rotation
.
See
Moment of inertia
, under
Moment
.
–
Rotation in office
,
the practice of changing public officers at frequent intervals by discharges and substitutions.
–
Rotation of crops
,
the practices of cultivating an orderly succession of different crops on the same land.

Ro-ta′tion

,
Adj.
Pertaining to, or resulting from, rotation; of the nature of, or characterized by, rotation;
as,
rotational
velocity
.

Webster 1828 Edition

Rotation

ROTA'TION

,
Noun.
[L. rotatio, from roto, to turn; rota, a wheel.]
1.
The act of turning, as a wheel or solid body on its axis, as distinguished from the progressive motion of a body revolving round another body or a distant point. Thus the daily turning of the earth on its axis, is a rotation; its annual motion round the sun is a revolution.
2.
Vicissitude of succession; the course by which officers or others leave their places at certain times and are succeeded by others; applied also to a change of crops.

Definition 2024

Rotation

Rotation

See also: rotation

German

Noun

Rotation f ‎(genitive Rotation, plural Rotationen)

  1. rotation

rotation

rotation

See also: Rotation

English

Noun

rotation ‎(plural rotations)

  1. (chiefly uncountable) The act of turning around a centre or an axis.
    • 2013 March 1, Frank Fish, George Lauder, “Not Just Going with the Flow”, in American Scientist, volume 101, number 2, page 114:
      An extreme version of vorticity is a vortex. The vortex is a spinning, cyclonic mass of fluid, which can be observed in the rotation of water going down a drain, as well as in smoke rings, tornados and hurricanes.
    The earth's rotation about its axis is responsible for its being slightly oblate rather than a sphere.
  2. A single complete cycle around a centre or an axis.
    Earth's moon completes a rotation every twenty-seven days or so.
  3. A regular variation in a sequence.
    crop rotation
    The medical resident finished a two-week rotation in pediatrics and began one in orthopaedics.
  4. (mathematics, geometry) An operation on a metric space that is a continuous isometry and fixes at least one point.
    The function mapping (x,y) to (−y,x) is a rotation.
  5. (baseball) The set of starting pitchers of a team.
  6. (aviation) The step during takeoff when the pilot commands the vehicle to lift the nose wheel off the ground during the takeoff roll.
  7. Repeated play on a radio station, etc.
    The new single enjoyed heavy rotation on MTV.

Hypernyms

Derived terms

Related terms

Translations

See also

French

Etymology

Latin rotationem, accusative of rotatio.

Noun

rotation f ‎(plural rotations)

  1. rotation

Swedish

Noun

rotation c

  1. act of turning a physical object or a coordinate system around a center or an axis

Declension

Inflection of rotation 
Singular Plural
Indefinite Definite Indefinite Definite
Nominative rotation rotationen rotationer rotationerna
Genitive rotations rotationens rotationers rotationernas

Etymology

From Latin rotationem, accusative of rotatio.

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