The Collaborative International Dictionary of English v.0.48:

Hyperorthodoxy \Hy`per*or"tho*dox`y\
   (h[imac]`p[~e]r*[^o]r"th[-o]*d[o^]ks`[y^]), n.
   Orthodoxy pushed to excess.

   Syn: ultraorthodoxy.
        [1913 Webster]