/ Dictionary / Index R rickets: Meaning and Definition of Find definitions for: rick•ets Pronunciation: (rik'its), [key] — n. Pathol. a disease of childhood, characterized by softening of the bones as a result of inadequate intake of vitamin D and insufficient exposure to sunlight, also associated with impaired calcium and phosphorus metabolism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rickets (Thesaurus) Rickenbacker rickettsia Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language