noun, plural radulae /-ˌli/ [-lee] 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.
Origin: 1745–55; Related forms
< Neo-Latin rādula, Latin:
scraper, equivalent to rād
) to scrape, rub + -ula -ule