brainstem Syllabification: (brain·stem)Pronunciation: /ˈbrānˌstem/ (also brain stem)Definition of brainstem noun Anatomy the central trunk of the mammalian brain, consisting of the medulla oblongata, pons, and midbrain, and continuing downward to form the spinal cord. brainstem in other Oxford dictionaries Definition of brainstem in the British & World English dictionary
