from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, or being a quantity that is either positive or zero.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. (of a quantity) Not negative; either zero or positive
  • n. Any value that is not negative.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. either positive or zero


from Wiktionary, Creative Commons Attribution/Share-Alike License

non- +‎ negative


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