rotation

Meanings

1. 1
   noun

   the act of rotating as if on an axis

   the rotation of the dancer kept time with the music

2. 2
   noun

   a planned recurrent sequence of crops or personnel

   Crop rotation makes a balanced demand on the fertility of the soil.

3. 3
   noun

   a single complete turn

   The plane made three rotations before it crashed.

4. 4
   noun

   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.

5. 5
   noun

   A single complete cycle around a centre or an axis.

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

6. 6
   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.

7. 7
   noun

   Тhe movement of investments between different sectors of an economy, or styles of investing, based on anticipated changes in the economic or market cycle.

   Sector rotation attempts to capitalize on the tendency of certain sectors to outperform others during specific economic phases, while style rotation involves shifting investments between different investment styles, such as moving from growth stocks to value stocks.

8. 8
   noun

   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.

Etymology

Borrowed from Latin rotatiō. By surface analysis, rotate + -ion.