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English definition of “theoretical”

theoretical

adjective     /θɪəˈretɪkəl/
IDEAS based on the ideas that relate to a subject, not the practical uses of that subject: theoretical physicsIdeas, concepts and theories
NOT PROVED related to an explanation that has not been provedLogic and reasonIdeas, concepts and theories
(Definition of theoretical adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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