Relating to or characteristic of explaining or interpreting something in a detailed, systematic way.
From expositor + -ial (suffix meaning 'of or relating to'). Latin exponitor + -ialis. This adjective form emphasizes the nature or quality of exposition itself.
Expositorial style is what we expect from good textbooks and documentaries—it's the difference between someone just listing facts and someone actually *teaching* you by building ideas step by step.
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