Proteidea \Pro`te*id"e*a\, n. pl. [NL. See {Proteus}, and
{-oid}.] (Zool.)
An order of aquatic amphibians having prominent external
gills and four legs. It includes Proteus and Menobranchus
({Necturus}). Called also {Proteoidea}, and {Proteida}.
[1913 Webster]