* No Central Tracking: There's no single organization tracking dictionary sales across all publishers and editions.
* Variety of Dictionaries: There are countless English dictionaries, from pocket-sized to multi-volume sets, from different publishers and in various editions.
* Evolving Definitions: The definition of "English dictionary" itself is broad. Does it include online dictionaries? Translations? Specialized dictionaries?
Instead of a specific number, we can consider these facts:
* Immense Popularity: Dictionaries are essential tools for language learning, writing, and communication, so they are incredibly popular.
* Continuous Sales: New editions and reprints of dictionaries are constantly being sold.
* Digital Growth: Online dictionaries have become increasingly popular, making tracking sales even more difficult.
In conclusion, while we can't know the exact number of English dictionaries sold, it's safe to say that the number is vast and continues to grow.