The Collaborative International Dictionary of English v.0.48:
Raisable \Rais"a*ble\ (r[=a]z"[.a]*b'l), a. Capable of being raised. [1913 Webster]WordNet (r) 3.0 (2006):
raisable adj 1: capable of being raised; "the roadster had a raisable sunroof" [syn: raisable, raiseable]