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English definition of “theoretical”

theoretical

adjective uk   /θɪəˈret.ɪ.kəl/ us    /ˌθiː.əˈret̬-/
C2 based on the ideas that relate to a subject, not the practical uses of that subject: theoretical physics C2 related to an explanation that has not been proved
(Definition of theoretical from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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