The Collaborative International Dictionary of English v.0.48:
Cultivatable \Cul"ti*va`ta*ble\ (k?l"t?-v?`t?-b'l), a. Cultivable. [1913 Webster]WordNet (r) 3.0 (2006):
cultivatable adj 1: (of farmland) capable of being farmed productively [syn: arable, cultivable, cultivatable, tillable]