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
For many, using essential oils is part of their lifestyles because of the benefits when applied topically or atmospherically through a diffuser.
—
Bestreviews, Mercury News, 16 Feb. 2026
Make working from home more enjoyable with a clever USB desk fan ($8) and soothing essential oil diffuser ($8).
—Mariana Best, Better Homes & Gardens, 15 Feb. 2026
Many hotels have created custom or signature scents that are distributed through professional diffusers, like HVAC systems.
—Hallie Milstein, Southern Living, 10 Feb. 2026
Hindsgaul suggests finishing the look with a diffuser on all hair types—even fine and straight.
—Jesa Marie Calaor, Allure, 10 Feb. 2026
See All Example Sentences for diffuser
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Bestreviews, Mercury News, 16 Feb. 2026
Make working from home more enjoyable with a clever USB desk fan ($8) and soothing essential oil diffuser ($8).
—Mariana Best, Better Homes & Gardens, 15 Feb. 2026
Many hotels have created custom or signature scents that are distributed through professional diffusers, like HVAC systems.
—Hallie Milstein, Southern Living, 10 Feb. 2026
Hindsgaul suggests finishing the look with a diffuser on all hair types—even fine and straight.
—Jesa Marie Calaor, Allure, 10 Feb. 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 21 Feb. 2026.
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