logos
n. uncountable C1 Advanced US //ˈɫoʊˌɡoʊz// UK //lˈəʊɡəʊz// lo·gos
n. reason or logic. In philosophy, it refers to the power of clear thinking and rational argument.
n. the faculty of reason, logic, or rational argument; in ancient Greek philosophy, the principle of order and knowledge governing the universe.
He used logos to explain his complex idea.
The speaker relied on logos rather than emotion to persuade the audience.
Aristotle distinguished logos from ethos and pathos as the primary mode of rational persuasion in rhetoric.