THAT pron.
In an elliptical sentence to introduce a dependent sentence expressing a wish, or a cause of surprise, indignation, or the like. Ha, cousin Silence, that thou hadst seen that that this knight and I have seen! Shak. O God, that right should thus overcome might! Shak.
THEORETIC; THEORETICAL 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. -- The`o*ret"ic*al*ly, adv.