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[raj-oo-luh] /ˈrædʒ ʊ lə/

noun, plural radulae
[raj-oo-lee] /ˈrædʒ ʊˌli/ (Show IPA)
a chitinous band in the mouth of most mollusks, set with numerous, minute, horny teeth and drawn backward and forward over the floor of the mouth in the process of breaking up food.
noun (pl) -lae (-ˌliː)
a horny tooth-bearing strip on the tongue of molluscs that is used for rasping food

surgical instrument, 1753, from Latin radula “scraper, scraping iron,” from radere “to scrape” (see raze). Related: Radular.


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