[AE]sthesia

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