/ Dictionary / Index F F.R.A.S.: Meaning and Definition of Find definitions for: F.R.A.S. Pronunciation: [key] Fellow of the Royal Astronomical Society. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. frappe Frascati Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language