THEORET'IC THEORET'ICAL, adjective [See Theory.] Pertaining to theory; depending on theory or speculation; speculative; terminating in theory or speculation; not practical; as theoretical learning; theoretic sciences. The sciences are divided into theoretical, as theology, philosophy and the like, and practical, as medicine and law.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI