Dictionary.com

thalweg

[ tahl-veg, -veyk ]
/ ˈtɑl vɛg, -veɪk /
Save This Word!

noun

a line, as drawn on a map, connecting the lowest points of a valley.
Chiefly International Law. the middle of the main navigable channel of a waterway that serves as a boundary line between states.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of thalweg

1860–65; <German, equivalent to Thal, now obsolete spelling of Tal valley (cognate with dale) + Wegway1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for thalweg

  • The thalweg has been frequently confirmed as the accepted boundary where no conventions to the contrary existed.

    International Law|George Grafton Wilson and George Fox Tucker

British Dictionary definitions for thalweg

thalweg

talweg

/ (ˈtɑːlvɛɡ) /

noun geography rare

the longitudinal outline of a riverbed from source to mouth
the line of steepest descent from any point on the land surface

Word Origin for thalweg

C19: from German, from Thal valley + Weg way, path
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for thalweg

thalweg
[ tälvĕg′ ]

The line defining the lowest points along the length of a river bed or valley, whether underwater or not.
A subterranean stream following a course similar to that of an overlying surficial stream.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Tired of Typos? Get Help Now!