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caisson

[ key-suhn, -son ]
/ ˈkeɪ sən, -sɒn /
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noun
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Origin of caisson

1695–1705; <French, Middle French <Old Provençal, equivalent to caissa box (see case2) + -on augmentative suffix

OTHER WORDS FROM caisson

caissoned, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use caisson in a sentence

British Dictionary definitions for caisson

caisson
/ (kəˈsuːn, ˈkeɪsən) /

noun
a watertight chamber open at the bottom and containing air under pressure, used to carry out construction work under water
a similar unpressurized chamber
a watertight float filled with air, used to raise sunken shipsSee also camel (def. 2)
a watertight structure placed across the entrance of a basin, dry dock, etc, to exclude water from it
  1. a box containing explosives, formerly used as a mine
  2. an ammunition chest
  3. a two-wheeled vehicle containing an ammunition chest
another name for coffer (def. 3)

Word Origin for caisson

C18: from French, assimilated to caisse case ²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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