The Collaborative International Dictionary of English v.0.48:

Hemophilia \Hem`o*phil"i*a\ (h[=e]`m[.a]*f[i^]l"[i^]*[.a] or
   h[e^]m`[.a]*f[i^]l"[i^]*[.a]), n. [NL., fr. Gr. a"i^ma, blood
   + filei^n to love.] (Med.)
   A condition characterized by a tendency to profuse and
   uncontrollable hemorrhage from the slightest wounds; it is
   caused by an absence or abnormality of a clotting factor in
   the blood, and is a recessive genetic disease linked to the
   X-chromosome, and therefore usually occurs only in males;
   there are several specific forms. It may be treated by
   administering purified clotting factor. It was formerly
   termed Hematophilia.
   [1913 Webster +PJC]

WordNet (r) 3.0 (2006):

hemophilia
    n 1: congenital tendency to uncontrolled bleeding; usually
         affects males and is transmitted from mother to son [syn:
         hemophilia, haemophilia, bleeder's disease]