from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The olfactory organ in certain molluscs, linked with the respiration organ. Its main function is to test incoming water for silt and other possible food particles.
from the GNU version of the Collaborative International Dictionary of English
- n. The olfactory organ of some Mollusca. It is connected with the organ of respiration.
from The Century Dictionary and Cyclopedia
- n. The so-called olfactory organ of mollusks; a patch or tract of specially modified epithelium of the body-wall at the base of the ctenidium, supplied with a special nerve, supposed to smell, taste, or otherwise test the water which the animal breathes, thus functioning as a special sense-organ.
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