Rhi`nen*ceph"a*lon (?), n.; pl. Rhinencephala (#). [NL., fr. Gr. , , the nose + the brain.] Anat.
The division of the brain in front of the prosencephalon, consisting of the two olfactory lobes from which the olfactory nerves arise.
⇒ The term is sometimes used for one of the olfactory lobes, the plural being used for the two taken together.
© Webster 1913.