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thalweg

 - 3 dictionary results

thal⋅weg

  [tahl-veg, -veyk]
–noun
1. a line, as drawn on a map, connecting the lowest points of a valley.
2. Chiefly International Law. the middle of the main navigable channel of a waterway that serves as a boundary line between states.
Use thalweg in a Sentence
Origin:
1860–65; < G, equiv. to Thal, now obs. sp. of Tal valley (c. dale ) + Weg way 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
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thal·weg   (täl'věg')   
n.   Geology

  1. The line defining the lowest points along the length of a river bed or valley.

  2. A subterranean stream.


[German : Tal, Thal, valley (from Middle High German tal, from Old High German) + Weg, way (from Middle High German wec, weg, from Old High German weg; see wegh- in Indo-European roots).]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
thalweg   (täl'věg')  Pronunciation Key 

  1. The line defining the lowest points along the length of a river bed or valley, whether underwater or not.

  2. A subterranean stream following a course similar to that of an overlying surficial stream.


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