The Collaborative International Dictionary
Expansile
Expansile \Ex*pan"sile\, a. Expansible.
Ether and alcohol are more expansile than water.
--Brande & C.
Wiktionary
expansile
a. 1 expansionary, relating to expansion 2 expandable, which can be expanded
WordNet
expansile
adj. (of gases) capable of expansion [syn: expandable, expandible, expansible]