The Free On-line Dictionary of Computing (30 December 2018):
(MVC) A way of partitioning the design of
interactivesoftware; a software architecture pattern. The
"model" is the internal workings of the program (the data objects
and algorithms), the "view" is how the user sees the state of
the model and the "controller" is how the user changes the state
or provides input.
MVC was the original kind of what is now sometimes called an MV*
pattern. Trygve Reenskaug introduced it into Smalltalk-76 while
visiting Xerox PARC in the 1970s.