The Collaborative International Dictionary
Appropriable
Appropriable \Ap*pro"pri*a*ble\, a. [See Appropriate.]
Capable of being appropriated, set apart, sequestered, or
assigned exclusively to a particular use.
--Sir T. Browne.
Wiktionary
appropriable
a. Able to be appropriated.
WordNet
appropriable
adj. that can be appropriated; "appropriable funds"