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

  • n. The cardinal number equal to 14 + 1.
  • n. The 15th in a set or sequence.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The cardinal number occurring after fourteen (14) and before sixteen (16).

from the GNU version of the Collaborative International Dictionary of English

  • adj. Five and ten; one more than fourteen.
  • n. The sum of five and ten; fifteen units or objects.
  • n. A symbol representing fifteen units, as 15, or xv.

from The Century Dictionary and Cyclopedia

  • Five more than ten, or one more than fourteen: a cardinal numeral.
  • n. The sum of ten and five, or fourteen and one.
  • n. A symbol representing fifteen units, as 15, XV, or xv.
  • n. Same as fifteenth, 3.

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

  • adj. being one more than fourteen
  • n. the cardinal number that is the sum of fourteen and one


Middle English fiftene, from Old English fīftēne; see penkwe in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English, from Old English fīftīene, fīftēne, from Proto-Germanic *fimftehun. Compare West Frisian fyftjin, Dutch vijftien, German fünfzehn, Danish femten. (Wiktionary)



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