'Myelencephalon' definitions:

Definition of 'myelencephalon'

From: WordNet
noun
The posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults

Definition of 'Myelencephalon'

From: GCIDE
  • Myelencephalon \My`e*len*ceph"a*lon\, n. [NL., from Gr. myelo`s marrow + E. encephalon.] (Anat.) (a) The brain and spinal cord; the cerebro-spinal axis. Sometimes abbreviated to myelencephal. (b) The metencephalon. --Huxley. [1913 Webster]