Definition of alluvial plain
1 : a level or gently sloping flat or a slightly undulating land surface resulting from extensive deposition of alluvial materials by running water
2 : a plain formed by lateral coalescence of alluvial fans a piedmont alluvial plain — compare bajada
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
First Known Use of alluvial plain
Seen and Heard
What made you want to look up alluvial plain? Please tell us where you read or heard it (including the quote, if possible).