/ Dictionary / Index R res: Meaning and Definition of Find definitions for: res Pronunciation: (rēz, rās), [key] — pl. res. an object or thing; matter. RES Pronunciation: [key] — Immunol. Immunol. See res. Pronunciation: [key] research. reserve. residence. resident; residents. resigned. resolution. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: res (Thesaurus) rerun Resaca de la Palma Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language