theoretical
US /ˌθiː.əˈret̬.ə.kəl/
UK /ˌθiː.əˈret̬.ə.kəl/
1.
concerned with or involving the theory of a subject or area of study rather than its practical application
:
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The course covers both theoretical and practical aspects of engineering.
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His knowledge is purely theoretical; he has no real-world experience.
2.
based on or calculated by theory rather than experience or practice
:
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The theoretical maximum speed of the car is 200 mph.
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In a theoretical world, this plan would work perfectly.