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si·ro·li·mus

(sə-rōlə-məs)

An immunosuppressive drug produced by the actinomycete Streptomyces hygroscopicus, C₁₅H₇₉NO₁₃, used in combination with cyclosporine and corticosteroids to prevent rejection of transplanted tissues or organs. Also called rapamycin.

[si-, origin unknown + (TAC)ROLIMUS.]

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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