The Collaborative International Dictionary of English v.0.48:

Mucoid \Mu"coid\, a. [Mucus + -oid.]
   Resembling mucus. --Dunglison.
   [1913 Webster]

   Mucoid degeneration, a form of degeneration in which the
      tissues are transformed into a semisolid substance
      resembling mucus. --Quain.
      [1913 Webster]