Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: MilitaryHQHQ /ˌeɪtʃ ˈkjuː/ noun [uncountable] PMthe abbreviation of headquartersFrom Longman Business DictionaryHQHQ abbreviation for HEADQUARTERSFilms are sent to the company’s HQ for processing. ldoceonline.com