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re·cer·ti·fy

(rē-sûrtə-fī′)

tr.v. re·cer·ti·fied, re·cer·ti·fy·ing, re·cer·ti·fies

To renew the certification of, especially certification given by a licensing board.

re′cer·ti·fi·cation (-fĭ-kāshən) n.

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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