The Collaborative International Dictionary of English v.0.48:

Encephaloid \En*ceph"a*loid\, a. [Gr. 'egke`falos + -oid.]
   Resembling the material of the brain; cerebriform.
   [1913 Webster]

   Encephaloid cancer (Med.), a very malignant form of cancer
      of brainlike consistency. See under Cancer.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Encephaloid \En*ceph"a*loid\, n.
   An encephaloid cancer.
   [1913 Webster]