| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| onyx |
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| SYLLABICATION: | on·yx |
| PRONUNCIATION: |   n  ks |
| NOUN: | A chalcedony that occurs in bands of different colors and is used as a gemstone, especially in cameos and intaglios. | | ETYMOLOGY: | Middle English onix, from Old French, from Latin onyx, from Greek onux, nail, onyx. See nogh- 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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