pediplain

noun

ped·​i·​plain

variants or pediplane

ˈpedəˌ+-

: an extensive geological pediment or a plain resulting from the coalescence of two or more pediments

Word History

Etymology

pediment + plain

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