Meaning of ampulla of Lorenzini

ampul'la of Lo•ren•zi'ni

Pronunciation: (lôr"un-zē'nē), [key]
— Ichthyol. Ichthyol.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.