I'm going based off the movies were he is seen laying on his side with now gone ear facing up. He is laying on his right side down implying that he lost his left ear.
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George Weasley was the twin that lost his ear to Snape's curse ("Sectumsempra!"). However, it is later revealed that the injury was an accident, and that Snape had been aiming for another Death Eater and unintentionally hit George instead.
Yeah! George Weasley loses a ear cause Severus Snape Cursed it of.
George did not die. He did lose an ear towards the beginning of the book. Fred was the one who was killed during the battle at Hogwarts. In a webchat J.K. Rowling revealed that George went on to run Weasley's Wizard Wheezes with Ron. On her website you can also find that he also marries Angelina and they have two children, Fred and Roxanne.
George Weasley
Well, honey, let me tell you straight - Fred Weasley did indeed lose an ear. That poor boy got it blasted off during the Battle of Hogwarts like it was no big deal. But hey, at least he went out in a blaze of glory fighting for what he believed in.