• synonyms

base level

noun Geology.
  1. the lowest level to which running water can erode the land.
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Origin of base level

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for base level

base level

  1. the lowest level to which a land surface can be eroded by streams, which is, ultimately, sea level
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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