diffuser
noun
dif·fus·er
di-ˈfyü-zər 
plural diffusers
1
: one that diffuses: such as
a
: a device (such as a reflector) for distributing the light of a lamp evenly
b
: a screen (as of cloth or frosted glass) for softening lighting (as in photography)
c
: a device (such as slats at different angles) for deflecting air from an outlet in various directions
d
: a device that produces a fine mist of water and often essential oils
2
: a device for reducing the velocity and increasing the static pressure of a fluid passing through a system
Examples of diffuser in a Sentence
Recent Examples on the Web
Placement and diffusion methods, such as candles, diffusers, or sprays, ensure a consistent scent throughout a home.
—
Kristina McGuirk, Better Homes & Gardens, 22 May 2026
Dyson also includes three attachments, including a conical barrel, a diffuser designed for waves and curls, and a blade concentrator.
—Sheena Vasani, The Verge, 22 May 2026
The slippery aero design also includes venturi flow elements built into the underbody, as well as an active rear diffuser and active front louvers to direct air into the large front fascia.
—ArsTechnica, 20 May 2026
An optional rear diffuser and aerodynamic elements beneath the body help with downforce as the car picks up speed.
—New Atlas, 20 May 2026
See All Example Sentences for diffuser
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Kristina McGuirk, Better Homes & Gardens, 22 May 2026
Dyson also includes three attachments, including a conical barrel, a diffuser designed for waves and curls, and a blade concentrator.
—Sheena Vasani, The Verge, 22 May 2026
The slippery aero design also includes venturi flow elements built into the underbody, as well as an active rear diffuser and active front louvers to direct air into the large front fascia.
—ArsTechnica, 20 May 2026
An optional rear diffuser and aerodynamic elements beneath the body help with downforce as the car picks up speed.
—New Atlas, 20 May 2026
See All Example Sentences for diffuser
Cite this Entry
“Diffuser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diffuser. Accessed 27 May. 2026.
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