onlap

noun

1

: progressive submergence of land by an advancing sea

2

: the arrangement of strata deposited on the floor of an advancing sea during its advance compare offlap, overlap

Word History

Etymology

on + lap, noun

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now