/ Dictionary / Index A aperture synthesis: Meaning and Definition of Find definitions for: ap'erture syn"thesis Pronunciation: [key] (in radio astronomy) a technique that combines the inputs of a set of radio telescopes to obtain a greater resolution of images than is possible with a single member of the set. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aperture ratio apery Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language