The Collaborative International Dictionary of English v.0.48:

Esthete \Es"thete\, n.; Esthetic \Es*thet"ic\, a., Esthetical
\Es*thet"ic*al\, a., Esthetics \Es*thet"ics\, n. etc.
   Same as [ae]sthete, [ae]sthetic, [ae]sthetical,
   [ae]sthetics, etc.
   [1913 Webster]

WordNet (r) 3.0 (2006):

esthete
    n 1: one who professes great sensitivity to the beauty of art
         and nature [syn: esthete, aesthete]