English Dictionary

rotation

/ɹoʊˈteɪʃən/

noun

(chiefly uncountable) The act of turning around a centre or an axis. / A single complete cycle around a centre or an axis.

The rotation of the Earth causes day and night.

意味（1）

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

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.

意味（2）

A single complete cycle around a centre or an axis.

Earth's moon completes a rotation every twenty-seven days or so.

意味（3）

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.

意味（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.

意味（5）

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

意味（6）

(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)

意味（7）

Repeated play on a radio station, etc.

The new single enjoyed heavy rotation on MTV.