noun Anatomy.

  1. the most posterior of the three primary divisions of the brain in the embryo of a vertebrate or the part of the adult brain derived from this tissue, including the cerebellum, pons, and medulla oblongata; rhombencephalon.


  1. the nontechnical name for rhombencephalon


  1. rhombencephalon

  1. The rearmost part of the vertebrate brain. In humans, it consists of the pons and the medulla oblongata. Compare forebrain midbrain.
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