American English

Definition of collapse noun from the Oxford Advanced American Dictionary



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  1. 1[countable, usually singular, uncountable] a sudden failure of something, such as an institution, a business, or a course of action the collapse of law and order in the area The peace talks were on the verge of collapse.
  2. of building
  3. 2[uncountable] the action of a building suddenly falling The walls were strengthened to protect them from collapse.
  4. illness
  5. 3[uncountable, countable, usually singular] a medical condition when a person suddenly becomes very sick, or when someone falls because they are sick or weak a state of mental/nervous collapse She was taken to hospital after her collapse at work.
  6. of prices/currencies
  7. 4[countable, usually singular] a sudden fall in value the collapse of share prices/the dollar/the market
See the Oxford Advanced Learner's Dictionary entry: collapse