Pronunciation: (pā'lōd"), [key]
1. the part of a cargo producing revenue or income, usually expressed in weight.
2. the number of paying passengers, as on an airplane.
3. Aerospace, Mil.
a. the bomb load, warhead, cargo, or passengers of an aircraft, a rocket, missile, etc., for delivery at a target or destination.
b. the total complement of equipment carried by a spacecraft for the performance of a particular mission in space.
c. the explosive energy of the warhead of a missile or of the bomb load of an aircraft: a payload of 50 megatons.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.