onlap

[ on-lap, awn- ]

nounGeology.
  1. the advance of a sea beyond its former shore.

  2. the layer or layers of sedimentary rock formed on a seafloor as a result of a sea’s advance beyond its former shore.

Origin of onlap

1
First recorded in 1945–50; on + lap3

Words Nearby onlap

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024