| hindbrain | <anatomy> The posterior of the three principal divisions of the brain, including the epencephalon and metencephalon. Sometimes restricted to the epencephalon only. Origin: Hind, adj. + brain. Source: Websters Dictionary (01 Mar 1998) |
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| hindbrain vesicle | That part of the brainstem constituting the medulla oblongata (myelencephalon) and pons (metencephalon). (12 Dec 1998) |