Meaning of ROTATION in English

ROTATION

ro ‧ ta ‧ tion /rəʊˈteɪʃ ə n $ roʊ-/ BrE AmE noun

1 . [uncountable] when something turns with a circular movement around a central point

rotation of

the rotation of the Earth on its axis

rotation about/around

the planet’s rotation around the sun

2 . [countable] one complete circular turn around a central point SYN revolution :

The blades spin at 100 rotations per minute.

3 . [uncountable] the practice of regularly changing the thing that is being used or done, or the person who does a particular job:

job rotation

in rotation

Three plays will be performed in rotation during the drama festival.

4 . [countable] American English a period of time spent doing a particular job, when you will soon change to a different job for the same employer:

a young doctor on a rotation in the children’s ward

5 . [countable] American English the people who each take a turn to do a particular job in a regular order:

The rotation included two rookies, Hernandez and Saunders.

—rotational adjective

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.