noun, noun or participle which takes 'suru', transitive verb
article; discourse; dissertation; argument; commentary
A written piece that presents a reasoned argument or analysis, often academic or journalistic. Can be used as a noun or with する to mean 'to write an article/discourse'.
He wrote a political article for the newspaper.
教授は最新の研究について論説した。
The professor wrote a discourse on the latest research.
noun
editorial; leading article; leader
Specifically a newspaper editorial or leading article expressing the publication's opinion. Compare with 社説, which is a more common term for newspaper editorials.
See also: 社説
今朝の論説は教育改革について述べている。
This morning's editorial discusses education reform.