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hydrograph

 - 1 dictionary result

hy⋅dro⋅graph

[hahy-druh-graf, -grahf]
–noun
a graph of the water level or rate of flow of a body of water as a function of time, showing the seasonal change.

Origin:
1890–95; hydro- 1 + -graph
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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