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additional

[uh-dish-uh-nl]
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adjective
  1. added; more; supplementary: additional information.
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Origin of additional

First recorded in 1630–40; addition + -al1
Related formsad·di·tion·al·ly, adverbpre·ad·di·tion·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for additional

additional

adjective
  1. added or supplementary
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Derived Formsadditionally, adverb
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

Word Origin and History for additional

adj.

1640s, from addition + -al (1). Related: Additionally.

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Online Etymology Dictionary, © 2010 Douglas Harper