/ Dictionary / Index B Britannia: Meaning and Definition of Find definitions for: Bri•tan•ni•a Pronunciation: (bri-tan'ē-u, -tan'yu), [key] — n. the ancient Roman name of the island of Great Britain, esp. the S part where the early Roman provinces were. the British Empire. Great Britain. the United Kingdom of Great Britain and Ireland. the figure of a seated woman with trident and helmet used as a symbolic representation of Great Britain and the British Empire. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Britain Britannia metal Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language