extensible adj 1: capable of being protruded or stretched or opened out; "an extensile tongue"; "an extensible measuring rule" [syn: {extensile}, {extensible}] [ant: {inextensible}, {nonextensile}, {nonprotractile}]
Extensible \Ex*ten"si*ble\, a. [Cf. F. extensible. See {Extend}.] Capable of being extended, whether in length or breadth; susceptible of enlargement; extensible; extendible; -- the opposite of {contractible} or {compressible}. "An extensible membrane" --Holder. [1913 Webster]
extensible <programming> Said of a system (e.g., {program}, {file format}, {programming language}, {protocol}, etc.) designed to easily allow the addition of new {features} at a later date, e.g. through the use of {hooks}, an {API} or {plug-ins}. See also {extend}, {forward compatible}. (1998-01-15)