osphradium

noun os·phra·di·um

Definition of osphradium

plural

osphradia

\-ēə\
  1. :  a single or paired sense organ connected with one of the visceral ganglia and situated near the gill of most aquatic mollusks that is supposed to be alfactory or to test the purity of the water passing to the gills

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Origin and Etymology of osphradium

New Latin, from Middle Greek osphradion nosegay, diminutive of Late Greek osphra smell; akin to Greek ozein to smell — more at odor


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