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

The thoughtful guest might even mail over a diffuser in advance. Laura Regensdorf, Vogue, "10 Utterly Perfect Home Fragrances for the Holiday Hostess with the Mostest," 20 Nov. 2018 Add a few drops to your essential oil diffuser to make the whole house smell like Christmas, or apply topically to your temples, neck, and behind your ears for instant relaxation. Taysha Murtaugh, Country Living, "These Essential Oils Will Make Your Entire Home Smell Like Christmas," 14 Oct. 2018 Lavender bath bombs; lavender candles; deodorizing lavender sachets for your shoes, car or underwear drawer; lavender diffusers; lavender essential oils; even lavender chill pills for humans and dogs. Joanna Klein, The Seattle Times, "Lavender’s soothing scent could be more than just folk medicine," 26 Oct. 2018 This diffuser will calm you down and keep those close quarters smelling fresh. Carolyn Twersky, Seventeen, "15 Care Package Items for Every Kind of College Student," 2 Aug. 2018 Each is a very aggressive steel drum with this delicate silk thread strung across the opening to serve as a light diffuser. Christine Pittel, House Beautiful, "Designing a Modern Kitchen," 22 May 2014 There are active aero flaps in the hood, the front splitter, and the rear diffuser; the articulating rear wing can act as an active air brake; and the car’s underside is completely smooth and flat. Tony Markovich, Car and Driver, "With 1888 HP, the Rimac C_Two Puts Croatia on the Supercar Map," 7 Mar. 2018 From electronic diffusers to plug-in fresheners, there's no shortage of ways to make our homes smell good. Kelsey Kloss, ELLE Decor, "Home Fragrances: A Brief History, From Ancient Egypt To Today," 5 Aug. 2016 There's a new front diffuser and a much bigger rear wing. Jonathan M. Gitlin, Ars Technica, "Faster than an F1 car: Porsche is breaking records with the 919 Hybrid," 9 Apr. 2018

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.

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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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Statistics for diffuser

Last Updated

15 Mar 2019

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Time Traveler for diffuser

The first known use of diffuser was in 1645

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Rhyming Dictionary: Words that rhyme with diffuser

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