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radula

[raj-oo-luh]
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noun, plural rad·u·lae [raj-oo-lee] /ˈrædʒ ʊˌli/.
  1. 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.

Origin of radula

1745–55; < New Latin rādula, Latin: scraper, equivalent to rād(ere) to scrape, rub + -ula -ule
Related formsrad·u·lar, adjectivesub·rad·u·lar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for radula

radula

noun plural -lae (-ˌliː)
  1. a horny tooth-bearing strip on the tongue of molluscs that is used for rasping food
Derived Formsradular, adjective

Word Origin

C19: from Late Latin: a scraping iron, from Latin rādere to scrape
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for radula

n.

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

Online Etymology Dictionary, © 2010 Douglas Harper