When something is covered or filled with something else, especially a color or a feeling.
Suffusion can make people think of art, emotion, or a soft and gentle feeling.
Examples:
The suffusion of pink in the sky was beautiful.
Her face had a suffusion of red when she was embarrassed.
The suffusion of happiness in the room made everyone smile.
The suffusion of blue in the painting made it look like the sea.
The suffusion of light in the forest was magical.
The suffusion of warmth in her voice made me feel happy.