The part of the brain concerned with the sense of smell, receiving and processing olfactory stimuli.
In humans, the rhinencephalon is now considered to consist chiefly of the olfactory bulb, peduncle, tubercle, and cortex, and the cortical nucleus of the amygdala, but originally included other areas of the brain, such as the hippocampus.
rhinencephalon/ˌrʌɪnɛnˈsɛfəlɒn/ /ˌrʌɪnɛnˈsɛf(ə)lɒn/ /ˌrʌɪnɛnˈkɛfəlɒn/
Mid 19th century; earliest use found in Richard Owen (1804–1892), comparative anatomist and palaeontologist. From rhino- + encephalon.