Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from The Century Dictionary.

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

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

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

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

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

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

  • adjective being one more than fourteen
  • noun the cardinal number that is the sum of fourteen and one

Etymologies

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

[Middle English fiftene, from Old English fīftēne; see penkwe in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English, from Old English fīftīene, fīftēne, from Proto-Germanic *fimftehun. Compare West Frisian fyftjin, Dutch vijftien, German fünfzehn, Danish femten.

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