/ Dictionary / Index F fibroblast: Meaning and Definition of Find definitions for: fi•bro•blast Pronunciation: (fī'bru-blast"), [key] — n. Cell Biol. a cell that contributes to the formation of connective tissue fibers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fibroblast (Thesaurus) fibroadenoma fibrocartilage 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