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ty·ro·thri·cin

(tī′rō-thrīsĭn)

A substance obtained from the bacterium Bacillus brevis, composed chiefly of the polypeptide antibiotics tryocidine and gramicidin and used for topical treatment of infections caused by gram-positive bacteria.

[New Latin Tȳrothrix, former bacteria genus name (Greek tūros, cheese; see teuə- in the Appendix of Indo-European roots + Greek thrix, trikh-, hair, of unknown origin ) + -IN.]

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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