
The rhinarium (New Latin, `belonging to the nose`; plural: rhinaria) is the moist, naked surface around the nostrils of the nose in most mammals. In actual scientific usage it is typically called a `wet snout` or `wet nose` from its moist and shiny appearance. The groove in the center of it, which reaches the mouth, is called the philtrum. =...
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http://en.wikipedia.org/wiki/Rhinarium

(from the article `primate`) ...complexity of the nasal concha (`scroll` bones of the nose), the richness of the innervation of the olfactory mucous membrane, and the sensitivity ...
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http://www.britannica.com/eb/a-z/r/43

The area of hairless skin surrounding the nostrils in some mammals. ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973

rhinarium (s), rhinaria (pl) 1. The space between the anterior edge of the nasus and the lip. 2. In mammals, the extremity of the nose; especially, when hairless and habitually moist. 3. The area of hairless skin surrounding the nostrils in some animals. 4. That portion of an insect that would be the nose if it had one.
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http://www.wordinfo.info/words/index/info/view_unit/196/2
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