/ Dictionary / Index G Greenwich Observatory: Meaning and Definition of Find definitions for: Green'wich Observ'atory. Pronunciation: [key] See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Greenwich hour angle Greenwich Time Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language