Which dictionary publisher made history in 2000 by making their complete unabridged dictionary freely available online, disrupting traditional pricing models in the linguistics reference market?

In the world of language and linguistics, dictionaries aren't just reference books—they're powerful commercial products with fascinating market histories. The dictionary industry has seen dramatic shifts in recent decades as digital transformation changed how we access language resources. This poll tests your knowledge about a pivotal moment in dictionary market history that fundamentally altered consumer behavior and industry pricing strategies.

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Merriam-Webster
Oxford University Press
Cambridge University Press
Houghton Mifflin Harcourt (American Heritage)