DIFFUSER
diffuser, diffusor
(noun) optical device that distributes the light of a lamp evenly
diffuser, diffusor
(noun) baffle that distributes sound waves evenly
Source: WordNet® 3.1
Etymology
Adjective
diffuser
comparative form of diffuse
Noun
diffuser (plural diffusers)
Any person or thing that diffuses.
A device designed to diffuse a scent efficiently.
(optics) Any device that or spreads out or scatters light, making the light appear softer.
(automotive) A shaped section of a car's underbody which improves the car's aerodynamic properties.
(thermodynamics) A mechanical device that is designed to control the characteristics of a fluid at the entrance to a thermodynamic open system.
(sewage treatment) An aerating device consisting of a membrane with fine pores, through which air is blown to generate small bubbles.
(cooking) A cooking item that can be placed above a stove heating element or burner to separate the cooking utensil from the heat source.
A hairdryer attachment that diffuses the flow of air.
Source: Wiktionary
Dif*fus"er, n.
Definition: One who, or that which, diffuses.
Source: Webster’s Unabridged Dictionary 1913 Edition