Definition of codebreaking in English:

codebreaking

noun

See codebreaker

‘The mathematician who has written books on code-breaking, is scheduled to speak next month.’
  • ‘I find the Enigma files and ancillary code-breaking to be the most alluring of all spy activities.’
  • ‘The book's mix of code-breaking, art history, religion and mystical lore has helped it sell 25 million copies since it was published two years ago.’
  • ‘Visitors to the open day were able to try their hand at a series of techniques such as passport forgery, code-breaking and writing in invisible ink.’
  • ‘That encryption is vitally important is evidenced by the hundreds of millions spent on encryption technology and the billions spent on code-breaking.’