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 fishes} and {viviparous fishes}. See Illust. in Append.