Definition of breakthrough in English:

breakthrough

Syllabification: break·through
Pronunciation: /ˈbrākˌTHro͞o
 
/

noun

1A sudden, dramatic, and important discovery or development: a major breakthrough in DNA research
More example sentences
  • The secret to the Pool Putter's success are two key breakthroughs discovered by Swedish engineer Leif Sundberg.
  • The panels have been chosen to represent major breakthroughs achieved by the CSIR in scientific research.
  • Scientists at the University of York have made a major breakthrough in the fight against prostate cancer.
Synonyms
advance, development, step forward, success, improvement; discovery, innovation, revolution; progress, headway
1.1An instance of achieving success in a particular sphere or activity: her big breakthrough came on the stage when she won a Tony Award in 1958 [as modifier]: the band’s breakthrough album
More example sentences
  • It was a breakthrough series, setting trends for all comedy films to follow.
  • This breakthrough film fascinates on many levels.
  • Released in 1971, the year after Altman's breakthrough film, M * A * S * H, McCabe & Mrs. Miller remains one of the key American movies of the era.

Definition of breakthrough in:

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Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…