ROTATION

rotation, rotary motion

(noun) the act of rotating as if on an axis; “the rotation of the dancer kept time with the music”

rotation

(noun) 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”

rotation, revolution, gyration

(noun) a single complete turn (axial or orbital); “the plane made three rotations before it crashed”; “the revolution of the earth about the sun takes one year”

rotation

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

Source: WordNet® 3.1


Etymology

Noun

rotation (countable and uncountable, plural rotations)

(chiefly, uncountable) The act of turning around a centre or an axis.

A single complete cycle around a centre or an axis.

A regular variation in a sequence, such as to even-out wear, or people taking turns in a task; a duty roster.

(mathematics, geometry) An operation on a metric space that is a continuous isometry and fixes at least one point.

(baseball) The set of starting pitchers of a team.

(aviation) The step during takeoff when the pilot commands the vehicle to lift the nose wheel off the ground during the takeoff roll. (see also: V2)

Repeated play on a radio station, etc.

Synonyms

• turning

• revolution

• rota, roster, duty roster, schedule, turn, turn and turn about, cycling

Hypernyms

• (mathematics): isometry, transformation

Source: Wiktionary


Ro*ta"tion, n. Etym: [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, a.

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

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

2 April 2025

COVERT

(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”


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