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What does 400 stand for?

What does 400 mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: 400.

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What does 400 mean?

four hundred, 400, cd(adj)
being one hundred more than three hundred

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"400." Abbreviations.com. STANDS4 LLC, 2017. Web. 26 Sep. 2017. <http://www.abbreviations.com/400>.