总统 (zǒngtǒng) means 'president'—specifically the head of state or government in a republic, such as the President of the United States or the President of China. The character 总 (zǒng) means 'overall', 'chief', or 'general', conveying leadership and authority over a whole system; 统 (tǒng) means 'to unify', 'to govern', or 'to command', emphasizing centralized administration and coordination. Together, 总统 literally suggests 'the supreme unifier' or 'the chief administrator'—a title reflecting both hierarchical authority and integrative responsibility.

This term is formal and official, used in political discourse, news reports, and diplomatic contexts. It does not refer to corporate presidents (who are usually called 总经理 zǒngjīnglǐ) or university presidents (校长 xiàozhǎng), unless specified by context. While it can be used for any national president, it carries strong connotations of constitutional or elected leadership, especially in modern usage.