
1) Center 2) Centre 3) Nerve center 4) Nerve centre 5) Olfactory brain
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https://www.crosswordclues.com/clue/rhinencephalon

In animal anatomy, the rhinencephalon (from the Greek, rhino = `nose`, and enkephalon = `brain`) is a part of the brain involved with olfaction. ==Components== The term rhinencephalon has been used to describe different structures at different points in time. One definition includes the olfactory bulb, olfactory tract, anterior olfactory nucle...
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http://en.wikipedia.org/wiki/Rhinencephalon

• (n.) The division of the brain in front of the prosencephalon, consisting of the two olfactory lobes from which the olfactory nerves arise.
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http://thinkexist.com/dictionary/meaning/rhinencephalon/

(ri″nәn-sef´ә-lon) the part of the brain once thought to be concerned entirely with olfactory mechanisms, including olfactory nerves, bulbs, tracts, and subsequent connections (all olfactory in function) and the limbic system (not primarily olfactory in function); homologous with olfactory portio...
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http://www.encyclo.co.uk/local/21001
Rhi`nen·ceph'a·lon noun ;
plural Rhinencephala . [ New Latin , from Greek ........., ........., 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. ...
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http://www.encyclo.co.uk/webster/R/76

Type: Term Pronunciation: rī′nen-sef′ă-lon Definitions: 1. A largely archaic, and now rarely used, term denoting the parts of the cerebral hemisphere directly related to the sense of smell: the olfactory bulb, olfactory peduncle (together still listed as the first cranial nerve or olfactory nerve even though they form part of ...
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http://www.medilexicon.com/medicaldictionary.php?t=78222

[
n] - a center in the cerebral hemispheres that governs the sense of smell in lower animals
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http://www.webdictionary.co.uk/definition.php?query=rhinencephalon

rhinencephalon That portion of the cerebrum concerned with reception and integration of olfactory (smelling) impulses; the anterior inferior part of the forebrain that is chiefly concerned with olfaction.
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http://www.wordinfo.info/words/index/info/view_unit/2805/4
olfactory brain noun a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior
Found on
https://www.encyclo.co.uk/local/20974

Greek rhinion = nostril, and enkephalos = brain; hence, the part of the brain concerned with smell (relatively large in lower animals).
Found on
https://www.encyclo.co.uk/local/21450
No exact match found.