thalweg

Definitions

  • WordNet 3.6
    • n thalweg a line following the lowest points of a valley
    • n thalweg the middle of the chief navigable channel of a waterway that forms the boundary line between states
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Webster's Revised Unabridged Dictionary
    • n Thalweg (Physiography) A line following the lowest part of a valley, whether under water or not.
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Century Dictionary and Cyclopedia
    • n thalweg A line upon a topographical surface which is a natural watercourse, having everywhere the direction of greatest slope, and distinguished by having the lines of straight horizontal projection which cut it at right angles on the upper sides of the curves of equal elevation to which they are tangent.
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Chambers's Twentieth Century Dictionary
    • n Thalweg tal′vāh the deepest part of a valley.
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Etymology

Webster's Revised Unabridged Dictionary
G., fr. thal, valley + weg, way. See Dale; Way
Chambers's Twentieth Century Dictionary
Ger., thal, valley, weg, way.