Source : Webster's Revised Unabridged Dictionary (1913)

Habitable \Hab"it*a*ble\, a. [F. {habitable}, L. habitbilis.]
   Capable of being inhabited; that may be inhabited or dwelt
   in; as, the habitable world. -- {Hab"it*a*ble*ness}, n. --
   {Hab"it*a*bly}, adv.

Source : WordNet®

habitable
     adj : fit for habitation; "the habitable world" [syn: {inhabitable}]