from the GNU version of the Collaborative International Dictionary of English.

  • adjective one more than nineteen; denoting a quantity consisting of twenty items or units; -- representing the number twenty as Arabic numerals.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The cardinal number twenty.

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

  • adjective denoting a quantity consisting of 20 items or units
  • noun the cardinal number that is the sum of nineteen and one


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