payload
UK[ˈpeɪləʊd]US[ˈpeɪloʊd]
n
The part of a vehicle's load, especially an aircraft or rocket, that earns revenue or serves the primary purpose of the mission, as distinct from the equipment or personnel required to operate it.
n
The explosive warhead carried by a missile, bomb, or torpedo.
n
(Computing) The actual data or executable code being transmitted within a packet or other data unit, as opposed to headers or metadata.
Morpheme Breakdown
pay
load
pay
to pacify, satisfy (a creditor)
load
way, journey, conveyance, carrying
Etymology
The word "payload" is a modern compound, originating in the early 20th century from the transportation and military industries. It fuses the commercial concept of "pay," implying a profitable return, with the physical concept of a "load" that is carried. Literally, it means "the load that pays," distinguishing revenue-generating cargo or the mission-critical component from the operational weight of the vehicle itself. This core logic of a "productive burden" was seamlessly extended into computing terminology to describe the essential data within a transmission, as opposed to the administrative overhead of headers and protocols.
Analysis
Structure: pay + load
- pay (from Old French 'paier', from Latin 'pacare' meaning "to pacify, satisfy (a creditor)"). Functional role: Conveys the sense of something that yields a return or is profitable.
- load (from Old English 'lād' meaning "way, journey, conveyance, carrying"). Functional role: Denotes something that is carried.
Examples
The rocket's payload included several scientific satellites.
The missile was designed to deliver a conventional, non-nuclear payload.
The network packet's header was small, but its payload contained the entire image file.