THEORETICAL

theoretical, theoretic

(adjective) concerned primarily with theories or hypotheses rather than practical considerations; “theoretical science”

theoretical

(adjective) concerned with theories rather than their practical applications; “theoretical physics”

Source: WordNet® 3.1

Etymology

Adjective

theoretical (comparative more theoretical, superlative most theoretical)

Of or relating to theory; abstract; not empirical.

Antonym: practical

Source: Wiktionary

The`o*ret"ic, The`o*ret"ic*al, a. Etym: [Gr. theoreticus, F. théorétique.]

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition