payloadPronunciation: /ˈpeɪləʊd/Translate payload | into Italian Definition of payload noun 1the part of a vehicle’s load, especially an aircraft’s, from which revenue is derived; passengers and cargo. equipment, personnel, or satellites carried by a spacecraft. an explosive warhead carried by an aircraft or missile. 2 Computing the actual information or message in transmitted data, as opposed to automatically generated metadata. the effects of a virus on a computer system. payload in other Oxford dictionaries Definition of payload in the US English dictionary