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
Each set has slightly different attachments (e.g., the curly set has a diffuser, while the straight and wavy set has second curler size and a flyaway tool), but both are on sale for $100 off.
—
Boutayna Chokrane, Wired News, 11 July 2025
With five temperature settings (including a cold shot button), three airflow speeds, and six attachments—including a diffuser and smoothing nozzle—you’ve got full control over your blowout.
—Christa Joanna Lee, Allure, 5 July 2025
Your bathroom will smell great without candles or diffusers!
—Mary Catherine McAnnally Scott, Southern Living, 5 July 2025
The mosquito-repellent system consists of three diffusers (single-use replaceable pods) that offer 330 square feet of coverage via 36 feet of warm-glow string lights.
—Mariana Best, Better Homes & Gardens, 19 June 2025
See All Example Sentences for diffuser
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Boutayna Chokrane, Wired News, 11 July 2025
With five temperature settings (including a cold shot button), three airflow speeds, and six attachments—including a diffuser and smoothing nozzle—you’ve got full control over your blowout.
—Christa Joanna Lee, Allure, 5 July 2025
Your bathroom will smell great without candles or diffusers!
—Mary Catherine McAnnally Scott, Southern Living, 5 July 2025
The mosquito-repellent system consists of three diffusers (single-use replaceable pods) that offer 330 square feet of coverage via 36 feet of warm-glow string lights.
—Mariana Best, Better Homes & Gardens, 19 June 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 2 Aug. 2025.
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