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ampulla of Lorenzini

American  
[lawr-uhn-zee-nee] / ˌlɔr ənˈzi ni /

noun

Ichthyology.
  1. any of an array of electroreceptors in the head of sharks, skates, and rays capable of detecting weak electrical signals produced by muscular activity in other creatures.


Etymology

Origin of ampulla of Lorenzini

After Italian physician Stefano Lorenzini (flourished 1678), who first described them