/ Dictionary / Index R Rotarian: Meaning and Definition of Find definitions for: Ro•tar•i•an Pronunciation: (rō-târ'ē-un), [key] — n. a member of a Rotary Club. —adj. of or pertaining to Rotarians or Rotary Clubs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rotarian (Thesaurus) rotameter rotary Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language