debouchment


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de·bouch·ment

 (dĭ-bouch′mənt, -bo͞osh′-)
n.
1. The act or an instance of marching from a narrow, confined area into the open.
2. A debouchure.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

debouchment

(dɪˈbaʊtʃmənt)
n
1. (Military) the act or an instance of debouching
2. (Physical Geography) Also: debouchure an outlet, mouth, or opening
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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(1983) that the development of the drainage network of the Ebro and its debouchment into the Mediterranean was due to some small E or SE flowing stream which had cut by headward erosion the Catalan Coastal Ranges during the low sea-level interval of the Messinian (Late Miocene), when it had increased energy/stream power.
The Alpheios River presents no evidence of having made a major tributary debouchment into Agoulenitsa Lagoon in the past several hundred years, although the bulbous shoreline of the Alpheios River delta, as shown in Figure 11, does suggest a broad, swinging, fanlike pattern of migrating channels throughout the historical period.
Still, metaphor conceals: time is not a river (with identifiable source and debouchment) which is not a dragon (with a will of its own).