论证 (zhèng lùn) is a noun meaning 'logical argument' — specifically, a structured, evidence-based reasoning process used to support or refute a claim. The character 论 (lùn) means 'to discuss' or 'theory', while 证 (zhèng) means 'to prove' or 'evidence'. Together, they convey the idea of proving something through reasoned discussion and factual support. This word is common in academic, legal, philosophical, and scientific contexts, where clarity, logic, and evidence are essential.

Unlike casual debate or opinion, 论证 emphasizes rigor: it involves premises, logical connections, and conclusions backed by data or authoritative sources. It’s often contrasted with 主观看法 (subjective views) or 猜测 (guesswork). You’ll encounter it in essays, research papers, policy analysis, and formal presentations — never in informal chats or emotional expressions. While the characters appear in other words (e.g., 证明 zhèngmíng 'to prove'), the compound 论证 always refers to the full process of constructing or evaluating an argument.