
A rhinophore is one of a pair of club-shaped structures which are the most prominent part of the external head anatomy of a group of sea slugs, marine gastropod opisthobranch mollusks in the order Nudibranchia, the nudibranchs, specifically the dorid nudibranchs. == Etymology == The name relates to the rhinophore`s function as an organ of `smell.....
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http://en.wikipedia.org/wiki/Rhinophore

• (n.) One of the two tentacle-like organs on the back of the head or neck of a nudibranch or tectibranch mollusk. They are usually retractile, and often transversely furrowed or plicate, and are regarded as olfactory organs. Called also dorsal tentacles. See Illust. under Pygobranchia, and Opisthobranchia.
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http://thinkexist.com/dictionary/meaning/rhinophore/

(from the article `chemoreception`) ...been designated as chemoreceptors, but with no critical evidence: (1) so-called subradular organs in the mouths of lower mollusks; (2) a structure ...
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http://www.britannica.com/eb/a-z/r/43
Rhi'no·phore noun [
Rhino- + Greek ......... to bear.]
(Zoology) One of the two tentacle-like organs on the back of the head or neck of a nudibranch or tectibranch mollusk. They are usually retractile, and often transversely furrowed or plicate, and are regarded as olfactory organs. Called ...
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http://www.encyclo.co.uk/webster/R/76

rhinophore A process on the aboral side of the eye of certain molluscs, with supposed olfactory function.
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http://www.wordinfo.info/words/index/info/view_unit/2805/7
No exact match found.