Which major dictionary publisher had to recall their entire first print run in 2012 due to accidentally omitting the word 'siphon' from their flagship edition?

In the world of language and linguistics, even the most trusted reference materials can have flaws. Product recalls happen in every industry, and dictionaries are no exception. This trivia question explores a notable recall in the publishing world that sent lexicographers scrambling and made headlines in linguistic circles. Test your knowledge about this rare vocabulary emergency!

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Oxford University Press
Collins Dictionary
Merriam-Webster
Cambridge University Press