rhin·en·ceph·a·lon /ˌraɪ(ˌ)nɛnˈsɛfəˌlɑn, lən/
  嗅腦
  rhin·en·ceph·a·lon /ˌraɪ(ˌ)nɛnˈsɛfəˌlɑn, lən/ 名詞
  嗅腦
  Rhi·nen·ceph·a·lon n.; pl. Rhinencephala   Anat. The division of the brain in front of the prosencephalon, consisting of the two olfactory lobes from which the olfactory nerves arise.
  Note: ☞ The term is sometimes used for one of the olfactory lobes, the plural being used for the two taken together.
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  rhinencephalon
       n : a center in the cerebral hemispheres that governs the sense
           of smell in lower animals; in humans it seems to mediate
           complex emotional behavior [syn: olfactory brain]
       [also: rhinencephala (pl)]