‘伟业’ (wěi yè) is a formal, literary noun meaning ‘great undertaking’ or ‘monumental achievement.’ It combines 伟 (wěi), meaning ‘great,’ ‘grand,’ or ‘magnificent,’ and 业 (yè), meaning ‘undertaking,’ ‘enterprise,’ or ‘achievement.’ Together, they evoke something historically significant, heroic, or exceptionally impactful—often associated with national development, scientific breakthroughs, or lifelong contributions by distinguished figures.

This term carries strong positive connotations and elevated register; it rarely appears in casual speech. You’ll commonly encounter it in official speeches, historical narratives, biographies, or news reports commemorating major milestones—such as space exploration successes, foundational reforms, or cultural legacies. Because of its weight and formality, ‘伟业’ is seldom used to describe personal, everyday accomplishments like finishing a project or passing an exam.