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