'Theoretical' definitions:

Definition of 'theoretical'

From: WordNet
adjective
Concerned primarily with theories or hypotheses rather than practical considerations; "theoretical science" [syn: theoretical, theoretic] [ant: empiric, empirical]
adjective
Concerned with theories rather than their practical applications; "theoretical physics" [ant: applied]

Definition of 'Theoretical'

From: GCIDE
  • Theoretic \The`o*ret"ic\, Theoretical \The`o*ret"ic*al\, a. [Gr. ?: cf. L. theoreticus, F. th['e]or['e]tique.] Pertaining to theory; depending on, or confined to, theory or speculation; speculative; terminating in theory or speculation: not practical; as, theoretical learning; theoretic sciences. -- {The`o*ret"ic*al*ly}, adv. [1913 Webster]