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onlap

 - 1 dictionary result

on⋅lap

[on-lap, awn-]
–noun Geology.
1. the advance of a sea beyond its former shore.
2. the layer or layers of sedimentary rock formed on a sea floor as a result of this advance.
Compare offlap.


Origin:
1945–50; on + lap 3
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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