EXTENSIBLE

extensile, extensible

(adjective) capable of being protruded or stretched or opened out; “an extensile tongue”; “an extensible measuring rule”

Source: WordNet® 3.1

Adjective

extensible (comparative more extensible, superlative most extensible)

Capable of being extended.

Synonyms

• extendible

• extendable

Antonyms

• inextensible

Source: Wiktionary

Ex*ten"si*ble, a. Etym: [Cf. F. extensible. See Extend.]

Definition: Capable of being extended, whether in length or breadth; susceptible of enlargement; extensible; extendible; -- the opposite of contractible or compressible. "An extensible membrane" Holder.

Source: Webster’s Unabridged Dictionary 1913 Edition