Meta Object Protocol. In general, an object oriented program, accessible to programers, which defines the internals of a supported system in such a way as to allow programmers to tailor the system to better meet their particular needs. Such needs might include efficiency or expressive power. In particular, a MOP has been defined for the Common Lisp Object System, which is implemented using this particular MOP. Often, when people refer to " the MOP" as opposed to " MOP", they are refering to the CLOS MOP. However, AMOP is short for The Art of the Metaobject Protocol, which defines " the MOP". See the MOP references.
Maintenance Operation Protocol. Digital Equipment Corporation protocol, a subset of which is supported by Cisco, that provides a way to perform primitive maintenance operations on DECnet systems. For example, MOP can be used to download a system image to a diskless station.