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pen·i·cil·la·mine

(pĕn′ĭ-sĭlə-mēn′)

A chelating agent, C₅H₁₁NO₂S, that is a degradation product of penicillin and is used in the treatment of Wilson disease, refractory rheumatoid arthritis, and excess urinary excretion of cystine.

[PENICILL(IN) + -AMINE.]

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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