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Thompson River

A river of southern British Columbia, Canada, formed by the confluence of northern and southern branches and flowing generally southwest to the Fraser River. It is about 490 km (305 mi) long from the head of the northern branch.

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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