逻辑学 (luó jí xué) is the academic discipline of logic — the formal study of valid reasoning, argument structure, and principles of inference. It examines how conclusions follow from premises, distinguishing sound arguments from fallacious ones. The word combines three characters: 逻 (luó), borrowed from the transliteration of 'logic' and carrying no independent meaning here; 辑 (jí), meaning 'to compile' or 'to organize', suggesting systematic arrangement; and 学 (xué), meaning 'study' or 'learning'. Together, they convey the idea of the organized, systematic study of reasoning.

This term is used exclusively in academic, philosophical, and formal educational contexts — for example, in university course titles, textbooks, or scholarly discussions. It is not used in casual speech to mean 'common sense' or 'reasoning ability'; for those meanings, native speakers say 道理 (dào lǐ) or 推理能力 (tuī lǐ néng lì). Logic as a field includes symbolic logic, mathematical logic, and philosophical logic, and it underpins computer science, mathematics, and law.