uncoupling

un·cou·ple

[uhn-kuhp-uhl] verb, un·cou·pled, un·cou·pling.
verb (used with object)
1.
to release the coupling or link between; disconnect; let go: to uncouple railroad cars.
verb (used without object)
2.
to become unfastened; let go: The glider uncoupled from the tow plane.

Origin:
1300–50; Middle English unco(u)plen; see un-2, couple

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
uncouple (ʌnˈkʌpəl) [Click for IPA pronunciation guide]
 
vb
1.  to disconnect or unfasten or become disconnected or unfastened
2.  (tr) to set loose; release

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Uncoupling is always a great word to know.
So is ort. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a scrap or morsel of food left at a meal.
Etymonline
Word Origin & History

uncouple
c.1300, from un- (2) + couple (v.). Cf. M.Du. ontcoppelen.
Online Etymology Dictionary, © 2010 Douglas Harper
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