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 ]
(adj) capable of being protruded or stretched or opened out, Syn. extensible, Ant. nonextensile, Example:an extensile tongue; an extensible measuring rule