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WordReference Random House Learner's Dictionary of American English © 2024cais•son /ˈkeɪsɑn, -sən/USA pronunciation n. [countable]- Civil Engineeringa structure built to protect workers, esp. a chamber for use in underwater construction.
- Militarya two-wheeled wagon used for carrying ammunition for cannons.
WordReference Random House Unabridged Dictionary of American English © 2024cais•son (kā′sən, -son),USA pronunciation n. - Civil Engineeringa structure used in underwater work, consisting of an airtight chamber, open at the bottom and containing air under sufficient pressure to exclude the water.
- Civil Engineeringa boatlike structure used as a gate for a dock or the like.
- [Naut.]
- NauticalAlso called camel, pontoon. a float for raising a sunken vessel, sunk beside the vessel, made fast to it, and then pumped out to make it buoyant.
- Naval Termsa watertight structure built against a damaged area of a hull to render the hull watertight;
cofferdam.
- Militarya two-wheeled wagon, used for carrying artillery ammunition.
- Militaryan ammunition chest.
- Militarya wooden chest containing bombs or explosives, used formerly as a mine.
- Architecturecoffer (def. 4).
- Old Provencal, equivalent. to caissa box (see case2) + -on augmentative suffix
- French, Middle French
- 1695–1705
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