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debouchment

[dih-boosh-muh nt, -bouch-]
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noun
  1. an act or instance of debouching.
  2. Also de·bou·chure [dih-boo-shoo r, dih-boo-shoo r] /dɪˈbu ʃʊər, dɪ buˈʃʊər/. Physical Geography. a mouth or outlet, as of a river or pass.
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Origin of debouchment

From the French word débouchement, dating back to 1820–30. See debouch, -ment
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for debouchment

debouchment

noun
  1. the act or an instance of debouching
  2. Also: debouchure (ˌdeɪbuːˈʃʊə) an outlet, mouth, or opening
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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