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
The Featherweight StyleMax Hair Dryer is one of the best hair dryers for curly hair due to its diffuser, comb, and concentrator attachments that enhance types 2A to 4C hair, as well as its accommodating selection of heat and airflow settings.
—
Stacia Datskovska, Footwear News, 16 Oct. 2025
Its naked carbon-fiber body bears the scuffs and scars of life as a development hack, but its steroidal wheelarches, extendable rear spoiler, and brutal diffuser deliver an emphatic statement of intent.
—Tim Pitt, Robb Report, 15 Oct. 2025
Outask is also advertising a package with a TD2, lantern-style lamp diffuser, wall mount and carry case at a $189 pledge level.
—New Atlas, 10 Oct. 2025
To re-create the style, Abramite recommends adding mousse to damp hair and blow-drying with a diffuser while scrunching for volume at the roots and expansion throughout.
—Marci Robin, Allure, 9 Oct. 2025
See All Example Sentences for diffuser
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Stacia Datskovska, Footwear News, 16 Oct. 2025
Its naked carbon-fiber body bears the scuffs and scars of life as a development hack, but its steroidal wheelarches, extendable rear spoiler, and brutal diffuser deliver an emphatic statement of intent.
—Tim Pitt, Robb Report, 15 Oct. 2025
Outask is also advertising a package with a TD2, lantern-style lamp diffuser, wall mount and carry case at a $189 pledge level.
—New Atlas, 10 Oct. 2025
To re-create the style, Abramite recommends adding mousse to damp hair and blow-drying with a diffuser while scrunching for volume at the roots and expansion throughout.
—Marci Robin, Allure, 9 Oct. 2025
See All Example Sentences for diffuser
Cite this Entry
“Diffuser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diffuser. Accessed 17 Oct. 2025.
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