Pronunciation: (lûr'nid for 1–3; lûrnd for 4),[key] —adj. 1. having much knowledge; scholarly; erudite: learned professors. 2. connected or involved with the pursuit of knowledge, esp. of a scholarly nature: a learned journal. 3. of or showing learning or knowledge; well-informed: learned in the ways of the world. 4. acquired by experience, study, etc.: learned behavior.