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1. The posterior portion of the embryonic hindbrain, from which the medulla oblongata develops.
2. The medulla oblongata of the adult brain.

my′e·len·ce·phal′ic (-sə-făl′ĭk) adj.


n, pl -lons or -la (-lə)
(Biology) the part of the embryonic hindbrain that develops into the medulla oblongata. Nontechnical name: afterbrain
myelencephalic adj


(ˌmaɪ ə lɛnˈsɛf əˌlɒn)

n., pl. -lons, -la (-lə).
the posterior section of the hindbrain, which develops into the medulla oblongata.
my`el•en`ce•phal′ic (-səˈfæl ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.myelencephalon - the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults
neural structure - a structure that is part of the nervous system
hindbrain, rhombencephalon - the posterior portion of the brain including cerebellum and brainstem
References in periodicals archive ?
The secondary vesicles arise from the primary vesicles: the prosencephalon divides into the telencephalon anteriorly and the diencephalon posteriorly; the rhombencephalon divides into the anterior metencephalon and the posterior myelencephalon.
As this process occurs, the choroid plexus develops from blood vessels that invade the ventricles from the diencephalon and the myelencephalon.
The rostral neural tube is contiguous with the myelencephalon and forms the spinal cord.