breakup

[breyk-uhp]
noun
1.
disintegration; disruption; dispersal.
2.
the ending of a personal, especially a romantic, relationship.
3.
a.
the melting and loosening of ice in rivers and harbors during the early spring.
b.
the first day on which such ice is soft or dispersed enough to permit ships to use the waterways.
4.
Informal. an act or instance of being convulsed with laughter.
5.
temporary distortion in a televised picture.

Origin:
1785–95; noun use of verb phrase break up

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Etymonline
Word Origin & History

breakup
also break up, late 15c., from break + up. Originally of groups, assemblies, etc. ("Break it up" as a command to stop a fight, etc., is recorded from 1936). Of things (also of marriages, relationships), "to disintegrate," from mid-18c. The noun is recorded from 1795.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The first is routine space pursuits and the accidental breakup of objects in
  orbit.
He found that they gorged on seals in the spring and early summer, before
  breakup, then retreated to land as the ice melted.
Born in winter, they complete their growth in time for summer's ice breakup,
  when they go fishing for themselves.
And the ice shelf breakup wasn't the only geologic disturbance on the island
  that summer.
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