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ox·y·co·done

(ŏk′sĭ-kōdōn′)

A semisynthetic opioid drug, C₁₈H₂₁NO₄, used in its hydrochloride form as a pain reliever, often in combination with nonopioid analgesics such as acetaminophen.

[(HYDR)OXY + COD(EINE) + -ONE.]

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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