expository

Adjective

not-comparable

Serving to explain, explicate, or elucidate; expositive; of or relating to exposition.

Japanese Meaning

説明的な / 解説的な / 説明に関する

The professor's expository lecture broke down the complex concept into clear, manageable steps.

教授の解説的な講義は複雑な概念を分かりやすく段階的に説明した。

Sense（1）

Serving to explain, explicate, or elucidate; expositive; of or relating to exposition.

Practicing expository writing will teach you to explain complex concepts clearly.