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British Dictionary definitions for a4

A4

noun
    1. a standard paper size, 210 × 297 mm
    2. (as adjective)an A4 book
    See also A sizes
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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