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som·nam·bu·late

(sŏm-nămbyə-lāt′)

intr.v. som·nam·bu·lat·ed, som·nam·bu·lat·ing, som·nam·bu·lates

To walk or perform another act while asleep or in a sleeplike condition.

som·nambu·lar (-lər) adj.

som′nam·bu·lation 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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