The story
From Ellis + -ize. A large number of immigrants to the United States were processed at Ellis Island.
Etymology from Wiktionary, CC BY-SA 4.0.
ellisize
Today it means: To anglicize or Americanize; to alter in transcription, either intentionally to facilitate spelling or pronunciation by (American) English speakers, or by mistake due to unfamiliarity with or indifference to the language of origin. Full definition →