/ Dictionary / Index D dicyclopentadienyliron: Meaning and Definition of Find definitions for: di•cy•clo•pen•ta•di•en•yl•i•ron Pronunciation: (dī-sī"klō-pen"tu-dī-en'l-ī"urn), [key] — n. Chem. ferrocene (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dicyandiamide dicyclopentadienyl metal Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language