diffusor
/dɪˈfjuːsər/Definitions
1. noun
A device for diffusing sound, light, or some other physical agent.
“The theater used a diffusor to create a more even sound distribution across the audience.”
2. noun
A device or object that facilitates the diffusion of a substance, especially a gas.
“The diffusor in the laboratory helped to disperse the chemicals evenly throughout the experiment.”