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nal·bu·phine

(năl-byfēn′)

A synthetic opioid narcotic, C₂₁H₂₇NO₄, used in the form of its hydrochloride as an analgesic.

[Blend of nalorphine, a narcotic antagonist (short for N-allylnormorphine, its chemical name) and BUTANE.]

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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