Whereby (adverb)

  1. By means of which; through which.
  2. By reason of which; as a result of which.

Origin:

Middle english: from where + by.

Examples:

  1. The new technology, whereby waste is turned into energy, is being tested.
  2. He came up with a new method, whereby the process was made more efficient.
  3. The system was redesigned whereby the error rate was reduced.
  4. The company adopted a new policy, whereby all employees are required to attend a training.
  5. He found a solution, whereby the problem was solved in a cost-effective way.
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