Diffuser (disambiguation)

Diffuser may refer to:

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  Diffuser (optics)

  An optical diffuser that spreads (scatters) light to reduce glare and create uniform illumination.

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  Diffuser (HVAC)

  A HVAC diffuser (air diffuser/vent register) that distributes conditioned air into a room.

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  Diffuser (aromatherapy)

  An aromatherapy diffuser that disperses essential oils into the air (e.g., ultrasonic or nebulizing diffusers).

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  Diffuser (coffee)

  A device used in coffee makers (notably espresso machines or brewers) to evenly distribute water over coffee grounds.