diffuser

adj

1. (comparative, form-of)comparative form of diffuse: more diffuse

noun

1. Any person or thing that diffuses.
2. A device designed to diffuse a scent efficiently.

   “They are in the under-$20 section, which includes a display of scented candles and diffusers.”

3. Any device that or spreads out or scatters light, making the light appear softer.

   “Along the sofa every three and a half feet, fluorescent tubes glow through translucent plastic diffusers.”

4. A shaped section of a car's underbody which improves the car's aerodynamic properties.
5. A mechanical device that is designed to control the characteristics of a fluid at the entrance to a thermodynamic open system.
6. An aerating device consisting of a membrane with fine pores, through which air is blown to generate small bubbles.
7. A cooking item that can be placed above a stove heating element or burner to separate the cooking utensil from the heat source.
8. A hairdryer attachment that diffuses the flow of air.