
The osphradium is an olfactory organ in certain molluscs, linked with the respiration organ. The main function of this organ is thought to be to test incoming water for silt and possible food particles. The organ is present in all members of the genus Conus, the cone snails, a group of predatory sea snails. It is a popular idea amongst malacologis...
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http://en.wikipedia.org/wiki/Osphradium

• (n.) The olfactory organ of some Mollusca. It is connected with the organ of respiration.
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http://thinkexist.com/dictionary/meaning/osphradium/

(from the article `chemoreception`) ...Body regions known to be most sensitive to chemicals have high concentrations of these cells. These regions are: (1) tentaclesa variety of ... [3 related articles]
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http://www.britannica.com/eb/a-z/o/36
Os·phra'di·um noun ;
plural Osphradia . [ New Latin , from Greek ... strong scent, from ... to smell.]
(Zoology) The olfactory organ of some Mollusca. It is connected with the organ of respiration.
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http://www.encyclo.co.uk/webster/O/37
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