Myelencephala \My`e*len*ceph"a*la\, n. pl. [NL. See {Myelencephalon}.] (Zo["o]l.) Same as {Vertebrata}.
myelencephalon n : the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults [also: {myelencephala} (pl)] myelencephala See {myelencephalon}