Definition of "diffuser"

comparative form of diffuse: more diffuse  examples

Any person or thing that diffuses.  examples

A device designed to diffuse a scent efficiently.  quotations  examples

(optics) Any device that or spreads out or scatters light, making the light appear softer.  quotations  examples

(automotive) A shaped section of a car's underbody which improves the car's aerodynamic properties.  examples

(thermodynamics) A mechanical device that is designed to control the characteristics of a fluid at the entrance to a thermodynamic open system.  examples

(sewage treatment) An aerating device consisting of a membrane with fine pores, through which air is blown to generate small bubbles.  examples

(cooking) A cooking item that can be placed above a stove heating element or burner to separate the cooking utensil from the heat source.  examples

A hairdryer attachment that diffuses the flow of air.  examples