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la·har

(lähär′)

1. A mass of volcanic fragments, often mixed with water, moving rapidly down the side of a volcano.

2. The deposit produced by a lahar.

[Javanese, lava, lahar; akin to Hanunó'o (Malayo-Polynesian language of Mindoro) l´ʔad, dry streambed, arroyo, and Malay dialectal (Thailand and northern peninsular Malaysia) lahar, pool of water in the jungle.]

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lahar

lahar flowing from the crater of Mt. St. Helens

March 19, 1982

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:

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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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