dif·​fus·​er | \ di-ˈfyü-zər How to pronounce diffuser (audio) \

Definition of diffuser

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
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 Adding essential oils turns it into an aromatic diffuser, too. Scharon Harding, Ars Technica, 28 Apr. 2022 The diffuser mounts to an air vent and disperses its aroma as the climate control wafts air through the vent. Duncan Brady, Car and Driver, 20 Apr. 2022 Transform mom's home into a spa oasis with a soothing diffuser. ELLE, 27 Apr. 2022 This is a modern distillery that used both high-pressure autoclaves to cook the agave piñas as well as a diffuser. Joseph V Micallef, Forbes, 23 Apr. 2022 The car still sports those giant kidney grilles up front, but it’s been outfitted with aerodynamic enhancements, like new spoilers and a rear diffuser. Bryan Hood, Robb Report, 30 Mar. 2022 The car's smooth underbelly directs air through a center diffuser as well. Dan Edmunds, Car and Driver, 22 Mar. 2022 Below, a rear diffuser accented in the same aluminum echoes the detailing on the hot-rod RS 6 Avant. Tim De Chant, Ars Technica, 16 Mar. 2022 Vitruvi's essential oil diffuser for less than $100? Talia Abbas, Glamour, 14 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diffuser.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of diffuser

1645, in the meaning defined at sense 1

History and Etymology for diffuser

diffuse entry 2 + -er entry 2

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Time Traveler for diffuser

Time Traveler

The first known use of diffuser was in 1645

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Last Updated

16 May 2022

Cite this Entry

“Diffuser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diffuser. Accessed 23 May. 2022.

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