博学 (bó xué) is an adjective meaning 'erudite' or 'learned', describing someone with broad, deep knowledge across many subjects. The character 博 (bó) means 'extensive', 'wide-ranging', or 'abundant', while 学 (xué) means 'study' or 'learning'. Together, they literally convey 'extensive learning' — not just mastery in one field, but wide intellectual cultivation and scholarly breadth. It’s a formal, respectful term often used in academic, literary, or historical contexts.

This word carries strong positive connotations and is frequently applied to scholars, teachers, classical literati, or respected elders. It appears in idioms like 博学多才 (bó xué duō cái, 'erudite and talented') and is commonly found in written Chinese — essays, biographies, and formal praise — rather than casual speech. Though grammatically an adjective, 博学 functions predicatively (e.g., 他很博学) or attributively before nouns (e.g., 博学的教授), but rarely as a standalone noun without modification.