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lahar

[lah-hahr] /ˈlɑ hɑr/
noun, Geology
1.
a landslide of wet volcanic debris on the side of a volcano.
2.
the deposit left by such a landslide.
Origin of lahar
1925-1930
1925-30; < Javanese: lahar, lava
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for lahar

lahar

/ˈlɑːhɑː/
noun
1.
a landslide of volcanic debris mixed with water down the sides of a volcano, usually precipitated by heavy rainfall
Word Origin
C20: from Javanese: lava
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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lahar in Science
lahar
  (lä'här')   
  1. A wet mass of volcanic fragments flowing rapidly downhill. Lahars usually contain ash, breccia, and boulders mixed with rainwater or with river or lake water displaced by the lava flow associated with the volcano.

  2. The deposit produced by such a flowing mass.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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