What is a SPAC and why was it just added to the dictionary?

Nov 2, 2021
Merriam Webster added 455 words to dictionary, including “blank check company.”
The spaceflight company Virgin Galactic is one of the many companies that's gone public through a SPAC. The number of SPACs has skyrocketed over the past decade.
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"Surreal" is 2016's top word

Dec 19, 2016
The runner-ups include "bigly", "deplorables" and "irregardless".
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