[¦ek·tō′ter·ə‚gȯid] (vertebrate zoology) A membrane bone located ventrally on the skull, situated behind the palate and extending to the quadrate; found in some fishes and reptiles.
ectopterygoid
ectopterygoid
(ĕk″tō-tĕr′ĭ-goyd) [Gr. ektos, outside, + pteryx, wing, + eidos, form, shape] The external (lateral) pterygoid muscle. It brings the jaw forward.