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microrelief

[mahy-kroh-ri-leef]
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noun
  1. surface features of the earth of small dimensions, commonly less than 50 feet (15 meters).
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Origin of microrelief

First recorded in 1930–35; micro- + relief2
Also called microtopography.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018