/ Dictionary / Index R rotation: Meaning and Definition of Find definitions for: ro•ta•tion Pronunciation: (rō-tā'shun), [key] — n. the act of rotating; a turning around as on an axis. the movement or path of the earth or a heavenly body turning on its axis. one complete turn of such a body. regularly recurring succession, as of officials. See an operation that rotates a geometric figure about a fixed point. curl (def. 17). a game in which the balls are played in order by number. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rotation (Thesaurus) rotating prism rotational molding Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language