/ Dictionary / Index G great seal: Meaning and Definition of Find definitions for: great' seal' Pronunciation: [key] the principal seal of a government or state. (caps.) the Lord Chancellor, keeper of the principal seal of Great Britain. his office. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Great Scott great skua Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language