collapse

[kuh-laps]
verb (used without object), collapsed, collapsing.
1.
to fall or cave in; crumble suddenly: The roof collapsed and buried the crowd.
2.
to be made so that sections or parts can be folded up, as for convenient storage: This bridge table collapses.
3.
to break down; come to nothing; fail: Despite all their efforts the peace talks collapsed.
4.
to fall unconscious or as if unconscious or physically depleted, as from a stroke, heart attack, disease, or exhaustion.
5.
Pathology.
a.
to sink into extreme weakness.
b.
(of lungs) to come into an airless state.
verb (used with object), collapsed, collapsing.
6.
to cause to collapse: He collapsed the table easily.
noun
7.
a falling in or together: Three miners were trapped by the collapse of the tunnel roof.
8.
a sudden, complete failure; breakdown: The bribery scandal brought about the complete collapse of his industrial empire.

Origin:
1725–35; < Latin collāpsus (past participle of collābī to fall, fall in ruins), equivalent to col- col-1 + lāp-, variant stem of lābī to fall + -sus, variant of -tus past participle ending

precollapse, verb, precollapsed, precollapsing.
uncollapsed, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
collapse (kəˈlæps)
 
vb
1.  (intr) to fall down or cave in suddenly: the whole building collapsed
2.  (intr) to fail completely: his story collapsed on investigation
3.  (intr) to break down or fall down from lack of strength
4.  to fold (furniture, etc) compactly or (of furniture, etc) to be designed to fold compactly
 
n
5.  the act or instance of suddenly falling down, caving in, or crumbling
6.  a sudden failure or breakdown
 
[C18: from Latin collāpsus, from collābī to fall in ruins, from lābī to fall]
 
col'lapsible
 
adj
 
col'lapsable
 
adj
 
collapsi'bility
 
n
 
collapsability
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

collapse
1732, from L. collapsus, pp. of collabi "fall together," from com- "together" + labi "to fall, slip." The pp. collapsed is attested from 1609, from L. collapsus, and this seems to have suggested the verb.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

collapse col·lapse (kə-lāps')
v. col·lapsed, col·laps·ing, col·laps·es

  1. To break down suddenly in strength or health and thereby fall into a condition of extreme prostration.

  2. To fall together or inward suddenly.

n.
  1. A condition of extreme prostration.

  2. A falling together of the walls of a structure.

  3. The failure of a physical system.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
More recently the overextended housing market collapsed, helping to trigger a
  credit meltdown.
The roof of one of the side chapels had collapsed from water damage, destroying
  sections of the murals.
The guest star was a supernova, a star that had run out of fuel and then
  collapsed in on itself in a thousandth of a second.
She rationed her intake of food until, on more than one occasion, she collapsed
  of weakness.
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