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WordReference Random House Learner's Dictionary of American English © 2024break•through /ˈbreɪkˌθru/USA pronunciation n. [countable]- an important and sudden advance, etc., as in science, that removes a barrier to progress:Pasteur's discovery about the nature of germs was an important breakthrough in the treatment of diseases.
- an act or instance of removing or getting past a barrier:The army made its breakthrough at dawn.
WordReference Random House Unabridged Dictionary of American English © 2024break•through (brāk′thro̅o̅′),USA pronunciation n. - Militarya military movement or advance all the way through and beyond an enemy's front-line defense.
- 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. - 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. - constituting a breakthrough:engineered with breakthrough technology; Critics called it a breakthrough film.
- noun, nominal use of verb, verbal phrase break through 1915–20
Collins Concise English Dictionary © HarperCollins Publishers:: break through vb - (intransitive) to penetrate
- (intr, adverb) to achieve success, make a discovery, etc, esp after lengthy efforts
n breakthrough - a significant development or discovery, esp in science
- the penetration of an enemy's defensive position or line in depth and strength
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