Source : Webster's Revised Unabridged Dictionary (1913)

Hydrocephaloid \Hy`dro*ceph"a*loid\, a. [Hydrocephalus + -oid.]
   (Med.)
   Resembling hydrocephalus.

   {Hydrocephaloid affection} (Med.), the group of symptoms
      which follow exhausting diarrhea in young children,
      resembling those of acute hydrocephalus, or tubercular
      meningitis.