'Habitability' definitions:

Definition of 'habitability'

From: WordNet
noun
Suitability for living in or on [syn: habitability, habitableness]

Definition of 'Habitability'

From: GCIDE
  • Habitability \Hab`it*a*bil"i*ty\ (h[a^]b`[i^]t*[.a]*b[i^]l"[i^]*t[y^]), n. Habitableness. [1913 Webster]