Caisson

/ˈkeɪ.sɑn/ noun

noun ·Uncommon ·Advanced level

Meaning at a glance

  • Primary sense: An enclosure from which water can be expelled, in order to give access to underwater areas for engineering works etc.
  • Grammar: caisson is listed as noun.
  • Nearest alternatives: ammunition cart, ammunition chest, ammunition wagon, caisson disease.
  • Useful contrasts: health, open air, wellness.
  • Usage evidence: During the construction of the viaduct, the sinking of the caissons in the river bed caused much difficulty to the engineer and contractors, as a bed of running sand was encountered; in consequence, the expenditure for these foundations proved almost prohibitive.

How to use "caisson"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "caisson" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "caisson" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "caisson" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "caisson" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "caisson" is acting as noun in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "ammunition cart" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "caisson", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    An enclosure from which water can be expelled, in order to give access to underwater areas for engineering works etc.

    "During the construction of the viaduct, the sinking of the caissons in the river bed caused much difficulty to the engineer and contractors, as a bed of running sand was encountered; in consequence, the expenditure for these foundations proved almost prohibitive."

  2. 2
    large watertight chamber used for construction under water wordnet
  3. 3
    The gate across the entrance to a dry dock.
  4. 4
    a chest to hold ammunition wordnet
  5. 5
    A floating tank that can be submerged, attached to an underwater object and then pumped out to lift the object by buoyancy; a camel.
Show 6 more definitions
  1. 6
    a two-wheeled military vehicle carrying artillery ammunition wordnet
  2. 7
    A two-wheeled, horse-drawn military vehicle used to carry ammunition (and a coffin at funerals).

    "Over hill, over dale / As we hit the dusty trail, / And those caissons go rolling along."

  3. 8
    an ornamental sunken panel in a ceiling or dome wordnet
  4. 9
    A large box to hold ammunition.
  5. 10
    A chest filled with explosive materials, used like a mine.
  6. 11
    A coffer.

Synonyms

All synonyms
ammunition cartammunition chestammunition wagoncaisson diseasecartoncase

Antonyms

healthopen airwellness

Example

"During the construction of the viaduct, the sinking of the caissons in the river bed caused much difficulty to the engineer and contractors, as a bed of running sand was encountered; in consequence, the expenditure for these foundations proved almost prohibitive."

Common questions

What does "caisson" mean?

An enclosure from which water can be expelled, in order to give access to underwater areas for engineering works etc.

What is a synonym for "caisson"?

Common synonyms include: ammunition cart, ammunition chest, ammunition wagon, caisson disease, carton, case.

How do you use "caisson" in a sentence?

During the construction of the viaduct, the sinking of the caissons in the river bed caused much difficulty to the engineer and contractors, as a bed of running sand was encountered; in consequence, the expenditure for these foundations proved almost prohibitive.

How do you pronounce "caisson"?

Pronounced /ˈkeɪ.sɑn/.

Etymology

Borrowed from French caisson. Doublet of cassone and cajón.

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