| BRA | the branch of neuroscience concerned with the brain |
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| BRA | the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus |
| BRA | a simple sugar found in lactose |
| BRA | someone who does surgery on the nervous system (especially the brain) |
| BRA | any surgical procedure involving the brain |
| BRA | an expert adviser involved in making important decisions but usually lacking official status |
| BRA | a tumor in the brain |
| BRA | a tumor in the brain |
| BRA | (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph |
| BRA | exhaustion that affects mental keenness |
| BRA | a difficult problem |
| BRA | the part of the skull that encloses the brain |