The Collaborative International Dictionary of English v.0.48:

Meditative \Med"i*ta*tive\, a. [L. meditativus: cf. F.
   m['e]ditatif.]
   Disposed to meditate, or to meditation; as, a meditative man;
   a meditative mood. -- Med"i*ta*tive*ly, adv. --
   Med"i*ta*tive*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

meditativeness
    n 1: deep serious thoughtfulness [syn: pensiveness,
         meditativeness, contemplativeness]