From Longman Business Dictionaryair timeˈair time1[uncountable]MARKETING the amount of time that a particular advertisement is seen on television, heard on radio etcBanks are now allowed only 375 seconds of air time monthly on each television station.2[uncountable] the amount of time that a MOBILE PHONE user talks on his or her phone in a particular period of timeCellular customers will pay normal air time charges for the service. → time
