| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| decade |
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| SYLLABICATION: | dec·ade |
| PRONUNCIATION: |  d k  d , d-kd |
| NOUN: | 1. A period of ten years. 2. A group or series of ten. | | ETYMOLOGY: | Middle English, a group of ten, from Old French, from Late Latin decas, decad-, from Greek dekas, from deka, ten. See dek in Appendix I.
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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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