统一 (tǒng yī) is a verb meaning 'to unify' or 'to standardize.' The character 统 (tǒng) conveys the idea of overall control, coordination, or integration, while 一 (yī) means 'one' — together they express bringing separate elements into a single, consistent system. It emphasizes harmonization, consolidation, or alignment under one standard, authority, or framework.

This word is commonly used in political, administrative, technical, and organizational contexts — for example, unifying national policies, standardizing product specifications, or integrating educational curricula across regions. It often carries formal or official connotations and appears frequently in news reports, government documents, and business communications. While it can describe physical unification (e.g., merging institutions), its core sense is functional or systemic coherence rather than mere physical joining.