the part of a cargo producing revenue or income, usually expressed in weight.
the number of paying passengers, as on an airplane.
Aerospace, Military. the bomb load, warhead, cargo, or passengers of an aircraft, a rocket, missile, etc., for delivery at a target or destination. the total complement of equipment carried by a spacecraft for the performance of a particular mission in space. the explosive energy of the warhead of a missile or of the bomb load of an aircraft: a payload of 50 megatons.
that part of a cargo earning revenue
the passengers, cargo, or bombs carried by an aircraft the equipment carried by a rocket, satellite, or spacecraft