Which major dictionary product was the first to formally recognize and include 'emoji' as an official word, signaling a shift in product development philosophy for linguistic resources?

The development of language products (dictionaries, translation tools, language learning apps) involves fascinating decisions about linguistic inclusion and evolution. This poll tests your knowledge about a pivotal moment in dictionary product development that reflected changing attitudes toward language evolution and consumer expectations.

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Oxford English Dictionary (2013)
Merriam-Webster Dictionary (2015)
Cambridge Dictionary (2017)
Collins Dictionary (2016)