air-to-air definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
launched from an aircraft and directed at a target in the air: air-to-air missiles
air-to-air definition by American Heritage Dictionary
Operating between, launched from, or involving rockets or aircraft in flight: air-to-air missiles; air-to-air communications.