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Hypothetically; as a possibility. As opposed to in reality or in practice. In theory, we could drive to the mountains for a quick ski session before our flight tomorrow evening, but I think it would be cutting it too close. These magnets are supposed to regulate the body's natural energy, in theory anyway.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
according to a theory; theoretically. In theory, if I take my medicine regularly, I will get well. How things work in theory doesn't always match with how things work in reality.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
in ˈtheoryused to say that a particular statement is supposed to be true but may in fact be wrong: In theory, these machines should last for ten years or more. ♢ That sounds fine in theory, but have you really thought it through?
Farlex Partner Idioms Dictionary © Farlex 2017