Payload

payload

(1) Refers to the "actual data" in a packet or file minus all headers attached for transport and minus all descriptive meta-data. In a network packet, headers are appended to the payload for transport and then discarded at their destination. In a key-length-value structure, the key and length are descriptive data about the value (the payload). See protocol stack.

(2) In the analysis of malicious software such as worms, viruses and Trojans, it refers to the software's harmful results. Examples of payloads include data destruction, messages with insulting text or spurious e-mail messages sent to a large number of people.

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payload

1. that part of a cargo earning revenue

2. 

a. the passengers, cargo, or bombs carried by an aircraft

b. the equipment carried by a rocket, satellite, or spacecraft

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payload [′pā‚lōd]

(aerospace engineering)

That which an aircraft, rocket, or the like carries over and above what is necessary for the operation of the vehicle in its flight.

(mining engineering)

The weight of coal, ore, or mineral handled, as distinct from dirt, stone, or gangue.

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Payload 

in space science and rocket technology, a space vehicle (artificial satellite or spaceship) or ballistic missile warhead carrying out a specific mission after separation from the final stage of the rocket carrier. The weight of payloads that can be launched by rockets varies from a few kilograms to several dozen metric tons.