| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| eon |
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| SYLLABICATION: | e·on |
| PRONUNCIATION: |     n ,  n |
| VARIANT FORMS: | also ae·on |
| NOUN: | 1. An indefinitely long period of time; an age. 2. The longest division of geologic time, containing two or more eras. | | ETYMOLOGY: | Late Latin ae n, from Greek ain. See aiw- 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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