| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| thirteen |
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| SYLLABICATION: | thir·teen |
| PRONUNCIATION: |  thûr-t n |
| NOUN: | 1. The cardinal number that is equal to the sum of 12 + 1. 2. The 13th in a set or sequence. 3. Something having 13 parts, units, or members. | | ETYMOLOGY: | Middle English thyrtene, alteration of thrittene, from Old English throt ne. See trei- in Appendix I. | | OTHER FORMS: | thir·teen —ADJECTIVEpron.
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| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
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