Main Entry: ro·ta·tion

Pronunciation: \rō-ˈtā-shən\

Function: noun

Date: 1555

1 a (1) : the action or process of rotating on or as if on an axis or center (2) : the act or an instance of rotating something b : one complete turn : the angular displacement required to return a rotating body or figure to its original orientation
2 a : return or succession in a series <rotation of the seasons> b : crop rotation
3 : the turning of a body part about its long axis as if on a pivot
4 : a game of pool in which all 15 object balls are shot in numerical order
5 : the series of pitchers on a baseball team who regularly start successive games in turn

— ro·ta·tion·al \-shnəl, -shə-n^əl\ adjective