theoretically
- In a way that relates to the theory of a subject or area of study rather than its practical application. adverbTheoretically, this plan should work, but we need to test it in practice.Theoretically, the machine can process thousands of units per hour, but in reality, it often breaks down.
- Used to describe a situation that is possible in theory but may not happen in reality. adverbTheoretically, anyone can become a millionaire, but it's not easy to achieve.Theoretically, the universe could be infinite, but we have no way to prove it.