/ Dictionary / Index G Gallienus: Meaning and Definition of Find definitions for: Gal•li•e•nus Pronunciation: (gal"ē-ē'nus), [key] — n. died a.d. 268, emperor of Rome 253–268 (son of Valerian). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Galli-Curci galligaskins Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language