Involving the spreading of something from a concentrated area to a less concentrated one.
The diffusive action of the perfume made the scent fill the room.
香水の拡散作用が部屋中に香りを広げました。
Spreading out slowly and gently.
The diffusive glow of the sunset painted the sky with warm colors.
夕焼けの拡散する光が空に暖かい色彩で描きました。