EXPANSIBLE
expandable, expandible, expansible, expansile
(adjective) (of gases) capable of expansion
expandable, expandible, expansible
(adjective) able to expand or be expanded
Source: WordNet® 3.1
Adjective
expansible (comparative more expansible, superlative most expansible)
expandable
Source: Wiktionary
Ex*pan"si*ble, a. Etym: [Cf. F. expansible.]
Definition: Capable of being expanded or spread out widely.
Bodies are not expansible in proposition to their weight.
Ex*pab"si*ble*ness ,n. -Ex*pan"si*bly ,adv.
Source: Webster’s Unabridged Dictionary 1913 Edition