/ Dictionary / Index A avgas: Meaning and Definition of Find definitions for: av•gas Pronunciation: (av'gas"), [key] — n. Aviation. gasoline for use in piston-engined aircraft. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. avg. avgolemono Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language