Definitions for pallialˈpæl i əl
Random House Webster's College Dictionary
pal•li•alˈpæl i əl(adj.)
of or pertaining to the mantle of a mollusk.
of or pertaining to the cerebral cortex.
Origin of pallial:
of or pretaining to a mantle, especially to the mantle of mollusks; produced by the mantle; as, the pallial line, or impression, which marks the attachment of the mantle on the inner surface of a bivalve shell. See Illust. of Bivalve