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base level

American  

noun

Geology.
  1. the lowest level to which running water can erode the land.


base level British  

noun

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

"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

Etymology

Origin of base level

First recorded in 1870–75

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Like Microsoft, Amazon did not specify the base level sales figure its chips business run-rate was calculated on.

From BBC Apr. 29, 2026

"That was the idea: to create confusion and generate skepticism at the base level by distorting certain elements of real things."

From Barron's Jan. 20, 2026

“Boiled down to the base level, yeah, you kick a ball through the pipes,” said Dicker, 25, whose team plays host Sunday to the Indianapolis Colts.

From Los Angeles Times Oct. 17, 2025

On a base level, these two friends make mistakes and are there to help each other clean them up; Helen and Sam just happen to be spies, too.

From Salon Dec. 11, 2024

“If you’d died, that would’ve been a black mark on my reputation, so yes, at some base level, I was...worried.”

From "Aru Shah and the End of Time" by Roshani Chokshi

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