rhin·​en·​ceph·​a·​lon ˌrī-(ˌ)nen-ˈse-fə-ˌlän How to pronounce rhinencephalon (audio)
: the chiefly olfactory part of the forebrain
rhinencephalic adjective

Word History


New Latin

First Known Use

1846, in the meaning defined above

Time Traveler
The first known use of rhinencephalon was in 1846

Dictionary Entries Near rhinencephalon

Cite this Entry

“Rhinencephalon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rhinencephalon. Accessed 14 Jun. 2024.

Medical Definition


rhin·​en·​ceph·​a·​lon ˌrī-(ˌ)nen-ˈsef-ə-ˌlän How to pronounce rhinencephalon (audio) -lən How to pronounce rhinencephalon (audio)
plural rhinencephala -lə How to pronounce rhinencephalon (audio)
: the anterior inferior part of the forebrain that is chiefly concerned with olfaction and that is considered to include the olfactory bulb together with the forebrain olfactory structures receiving fibers directly from it and often especially formerly the limbic system which is now known to be concerned with emotional states and affect

called also smell brain

rhinencephalic adjective
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