rotation
/ɹoʊˈteɪʃən/ noun
Forms rotations
- noun (chiefly uncountable) The act of turning around a centre or an axis. “The earth's rotation about its axis is responsible for its being slightly oblate rather than a sphere.”
- noun A single complete cycle around a centre or an axis. “Earth's moon completes a rotation every twenty-seven days or so.”
- noun A regular variation in a sequence, such as to even out wear, or people taking turns in a task; a duty roster. “Applying crop rotation to a field avoids depleting soil nutrients the way repeated use of a single crop might do.”
- noun (finance) Тhe movement of investments between different sectors of an economy, or styles of investing, based on anticipated changes in the economic or market cycle.
- noun (mathematics, geometry) An operation on a metric space that is a continuous isometry and fixes at least one point.
- noun (baseball) The set of starting pitchers of a team.
- noun (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)
- noun Repeated play of songs on a radio station, advertisements on a television channel, etc. “The new single enjoyed heavy rotation on MTV.”
Synonyms
turning revolution rota roster duty roster schedule turn turn and turn about cycling rotary motion gyration
Etymology
Borrowed from Latin rotātiō. By surface analysis, rotate + -ion.
Webster’s 1913
- noun 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.
- noun Any return or succesion in a series. Moment of rotation. See Moment of inertia, under Moment.
- adjective Pertaining to, or resulting from, rotation; of the nature of, or characterized by, rotation; as, rotational velocity.
Etymology [L. rotatio: cf. F. rotation.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “rotation”, CC BY-SA 4.0. Details