/ Dictionary / Index C Cid: Meaning and Definition of Find definitions for: Cid Pronunciation: (sid Sp. thēd), [key] — n. (“El Cid Campeador”) (Rodrigo Díaz de Bivar), c1040–99, Spanish soldier: hero of the wars against the Moors. (italics)See C.I.D. Pronunciation: [key] Criminal Investigation Department of Scotland Yard. c.i.d. Pronunciation: [key] — Auto. Auto. cubic-inch displacement: the displacement of an engine measured in cubic inches: My old car had a 302 c.i.d. engine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cid (Thesaurus) cicisbeo -cidal Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language