1. the spreading of something more widely
2. the process by which molecules of a liquid, gas, or solute spread out through a medium from an area of high concentration to an area of low concentration
Usage: scientific
3. the softening of harsh light or sound
Usage: technical

Examples

• The diffusion of new technology changed how people communicate.
• Cultural diffusion occurs when ideas spread between societies.
• Oxygen moves into cells through diffusion across the membrane.
• The perfume spread through the room by diffusion.
• The photographer used a screen for light diffusion.
• Sound diffusion in the concert hall created better acoustics.