/ Dictionary / Index R rotatory: Meaning and Definition of Find definitions for: ro•ta•to•ry Pronunciation: (rō'tu-tôr"ē, -tōr"ē), [key] — adj. pertaining to or of the nature of rotation: rotatory motion. rotating, as an object. passing or following in rotation or succession. causing rotation, as a muscle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rotatory (Thesaurus) rotator cuff rotavirus Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language