caisson

noun

cais·​son ˈkā-ˌsän How to pronounce caisson (audio)
-sᵊn,
 British also  kə-ˈsün
1
a
: a chest to hold ammunition
b
: a usually 2-wheeled vehicle for artillery ammunition attachable to a horse-drawn limber
also : a limber with its attached caisson
2
a
: a watertight chamber used in construction work under water or as a foundation
b
: a hollow floating box or a boat used as a floodgate for a dock or basin
3

Illustration of caisson

Illustration of caisson
  • caisson 1b

Examples of caisson in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The caisson becomes part of the finished structure. Ari Perez, The Conversation, 10 June 2024 Using a caisson is another way to provide a dry area at a site that is typically underwater. Ari Perez, The Conversation, 10 June 2024 To this day, old docks, piers and caissons are all submerged along the shoreline. Caitlin Looby, Journal Sentinel, 2 May 2024 In the months since, the Army has retired older horses, some as old as 20 that were still part of the group pulling the more than 2,500-pound caissons, which date back to 1918. Tara Copp, Fortune, 10 May 2023 See all Example Sentences for caisson 

Word History

Etymology

French, from Middle French, from Old Occitan, from caissa chest, from Latin capsa — more at case

First Known Use

circa 1702, in the meaning defined at sense 1a

Time Traveler
The first known use of caisson was circa 1702

Dictionary Entries Near caisson

Cite this Entry

“Caisson.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/caisson. Accessed 6 Dec. 2024.

Kids Definition

caisson

noun
cais·​son ˈkā-ˌsän How to pronounce caisson (audio)
ˈkā-sᵊn
1
a
: a chest for ammunition
b
: a usually two-wheeled vehicle for artillery ammunition
2
: a watertight chamber used in construction work underwater or as a foundation

More from Merriam-Webster on caisson

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