extend ex·tend (ĭk-stěnd')
v. ex·tend·ed, ex·tend·ing, ex·tends
To straighten a limb; unbend.
programming
To add features to a program, especially through the use of hooks.
"Extend" is very often used in the phrase "extend the functionality of a program."
Plug-ins are one form of extension.
(1997-06-21)