The Collaborative International Dictionary of English v.0.48:

Muraenoid \Mu*rae"noid\, Murenoid \Mu*re"noid\, a. [NL. Muraena,
   the generic name + -oid.] (Zool.)
   Like or pertaining to the genus Muraena, or family
   Muraenidae.
   [1913 Webster]