breakthrough

breakthrough — noun

1. a new discovery, method, or success that suddenly makes real progress possible a

1.nounB2
Definition

a new discovery, method, or success that suddenly makes real progress possible after a long, difficult problem.

Example

After ten failed tests, Mei's team finally made a breakthrough in battery design.

make a breakthrough in + field

Doctors called the new scan a breakthrough for children with heart disease.

a breakthrough for + group

Common collocations
  • make a breakthrough
  • major breakthrough
  • scientific breakthrough
  • breakthrough in research
  • breakthrough for patients
Synonyms
  • advance

    broader and often more gradual; a breakthrough usually feels sudden and important.

  • discovery

    fits new findings; a breakthrough can also be a method, agreement, or technical success.

  • milestone

    marks progress along the way; it does not always suggest solving a block.

  • leap forward

    more informal and strongly emphasizes speed or size of progress.

Antonyms
  • setback

    progress is slowed or pushed back instead of moving ahead.

  • dead end

    a point where no useful progress seems possible.

Grammar Patterns

make a breakthrough in + field

a breakthrough for + person / group

reach a breakthrough

Usage Note

Often appears with verbs like make, achieve, reach, announce, or bring. The noun usually names progress in a field or toward a hard solution, not just any good result.

Common Mistakes

They made breakthrough in cancer research.
They made a breakthrough in cancer research.
this singular noun needs an article.
Scientists made a breakthrough of cancer research.
Scientists made a breakthrough in cancer research.
use 'in' for the area where the progress happened.

breakthrough — adjective

Word family

Synonym discussion

Sense: noun/1

'Breakthrough' suggests a problem had blocked progress and then something new suddenly changed the situation. 'Discovery' is narrower: it is mainly about finding a fact, thing, or truth. 'Advance' is broader and can be steady rather than dramatic, so a field may advance for years without any single breakthrough. 'Innovation' focuses on a new idea, design, or method, especially in business or technology; not every innovation changes everything at once. 'Milestone' marks an important stage on a journey, but it does not always mean a barrier was removed. So you might call a cheap new malaria test a breakthrough, a planet found by a telescope a discovery, and ten years of better hospital systems an advance.

breakthrough ↗discovery ↗advance ↗innovation ↗milestone

Common collocations

Nouns

  • breakthrough discovery
  • breakthrough treatment
  • breakthrough technology

Phrases

  • make a breakthrough
  • achieve a breakthrough

Prepositions

  • breakthrough in
  • breakthrough for

Etymology

Old EnglishModern English

'Breakthrough' is a modern English compound built from 'break' and 'through'. It first referred to forcing a way past a barrier or line of defence. Later, speakers used the same image for science, medicine, and other fields, where a new idea seems to break through an old difficulty. The adjective grew from the noun and is now common before words like 'discovery', 'treatment', and 'device'.