aesthesia

from WordNet (r) 3.0 (2006)

aesthesia
    n 1: mental responsiveness and awareness [syn: {sensibility},
         {esthesia}, {aesthesia}] [ant: {insensibility}]

from The Collaborative International Dictionary of English v.0.48

AEsthesia \[AE]s*the"si*a\, n. [Gr. ? sensation, fr. ? to
   perceive.] (Physiol.)
   Perception by the senses; feeling; -- the opposite of
   an[ae]sthesia.
   [1913 Webster] AEsthesiometer