The Collaborative International Dictionary of English v.0.48:

Wesleyan \Wes"ley*an\, a. [See Wesleyanism.]
   Of or pertaining to Wesley or Wesleyanism.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Wesleyan \Wes"ley*an\, n. (Eccl.)
   One who adopts the principles of Wesleyanism; a Methodist.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Wesleyan
    adj 1: of or pertaining to or characteristic of the branch of
           Protestantism adhering to the views of Wesley; "Methodist
           theology" [syn: Methodist, Wesleyan]
    n 1: a follower of Wesleyanism