The Collaborative International Dictionary of English v.0.48:

Anglo-Catholicism \An"glo-Ca*thol"i*cism\, n.
   The belief of those in the Church of England who accept many
   doctrines and practices which they maintain were those of the
   primitive, or true, Catholic Church, of which they consider
   the Church of England to be the lineal descendant; a doctrine
   and practice within the Church of England emphasizing the
   Catholic tradition.

   Syn: High Anglicanism
        [Webster 1913 Suppl. + WordNet 1.5]

WordNet (r) 3.0 (2006):

Anglo-Catholicism
    n 1: a doctrine and practice within the Church of England
         emphasizing the Catholic tradition [syn: Anglo-
         Catholicism, High Anglicanism]