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Meaning of breakthrough

break•through

Pronunciation: (brāk'thr"), [key]
— n.
  1. a military movement or advance all the way through and beyond an enemy's front-line defense.
  2. an act or instance of removing or surpassing an obstruction or restriction; the overcoming of a stalemate: The president reported a breakthrough in the treaty negotiations.
  3. any significant or sudden advance, development, achievement, or increase, as in scientific knowledge or diplomacy, that removes a barrier to progress: The jet engine was a major breakthrough in air transport.
—adj.
  1. constituting a breakthrough: engineered with breakthrough technology; Critics called it a breakthrough film.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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