The Collaborative International Dictionary of English v.0.48:

Embiotocoid \Em`bi*ot"o*coid\, a. [NL. Embiotoca, the name of
   one genus + -oid.] (Zo["o]l.)
   Belonging to, or resembling, the Embiotocid[ae]. -- n. One
   of a family of fishes (Embiotocid[ae]) abundant on the
   coast of California, remarkable for being viviparous; -- also
   called surf fish and viviparous fish. See Illust. in
   Appendix.
   [1913 Webster]