theoretical

adj. existing only theory, hypothetical, abstract, speculative

The word theory has a number of distinct meanings in different fields of knowledge, depending on their methodologies and the context of discussion.In common usage, people often use the word theory to signify a conjecture, an opinion, or a speculation. In this usage, a theory is not necessarily based on facts; in other words, it is not required to be consistent with true descriptions of reality. True descriptions of reality are more reflectively understood as statements which would be true independently of what people think about them. In this usage, the word is synonymous with hypothesis. This common usage of theory leads to the common but misguided statement "It's not a fact, it's only a theory."
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Adjective
1. concerned primarily with theories or hypotheses rather than practical considerations; "theoretical science"
(synonym) theoretic
(antonym) empirical, empiric
(similar) abstractive
2. concerned with theories rather than their practical applications; "theoretical physics"
(antonym) applied
(similar) abstract
3. based on specialized theory; "a theoretical analysis"
(synonym) abstract
(similar) technical

(a.)
Pertaining to theory; depending on, or confined to, theory or speculation; speculative; terminating in theory or speculation: not practical; as, theoretical learning; theoretic sciences.
  

adj.
خيالي, قياسي, علمي, نظري