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ar·ach·nol·o·gy

(ăr′ək-nŏlə-gē)

The branch of zoology that deals with spiders and other arachnids.

[Greek arakhnē, spider + -LOGY.]

ar′ach·no·logi·cal (-nə-lŏjĭ-kəl) adj.

ar′ach·nolo·gist n.

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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