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e·phem·er·on

(ĭ-fĕmə-rŏn′)

n. pl. e·phem·er·a (-ər-ə) or e·phem·er·ons

1. A short-lived thing.

2. ephemera Printed matter of passing interest.

[Greek ephēmeron, mayfly, from neuter of ephēmeros, daily, short-lived; see EPHEMERAL.]

e·phem·er·a

(ĭ-fĕmər-ə)

A plural of ephemeron.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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