circumvallation

noun

cir·​cum·​val·​la·​tion ˌsər-kəm-ˌva-ˈlā-shən How to pronounce circumvallation (audio)
plural -s
1
: the act of circumvallating
2
: something that circumvallates
especially : ramparts or entrenchments around a besieged place or a besieging army

Word History

Etymology

Latin circumvallatus + English -ion

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

Browse Nearby Words

Cite this Entry

“Circumvallation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/circumvallation. Accessed 27 Dec. 2025.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!