Myelencephalon
Pronunciation : My`e*len*ceph"a*lon
Part of Speech : n.
Etymology : [NL., from Gr. encephalon.] (Anat.) (a) The brain and spinal cord; the cerebro-spinal axis; the neuron. Sometimes abbreviated to myelencephal. (b) The metencephalon. Huxley.
Source : Webster's Unabridged Dictionary, 1913