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fla·vi·vi·rus

(flāvĭ-vī′rəs)

n. pl. fla·vi·vi·rus·es

Any of a genus of RNA viruses that are transmitted by insects and ticks, including the viruses that cause yellow fever, dengue, and various types of encephalitis.

[FLAV(O)- (because the virus causing yellow fever is the type species of the genus) + VIRUS.]

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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