Propodium \Pro*po"di*um\, n.; pl. {Propodia}. [NL. See
{Propodiale}.] (Zool.)
(a) The anterior portion of the foot of a mollusk.
(b) The segment which forms the posterior part of the thorax
of a hymenopterous insect. [Written also {propodeum}.]
[1913 Webster]