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 How an essential oil diffuser has helped one writer find calm during this stressful time. NBC News, "Biden to reinstate Covid-19 travel bans, impeachment article heads to Senate and Super Bowl set," 25 Jan. 2021 So up her olfactory game with the Asakuki 100ml Diffuser, our favorite diffuser for the money. Rachel Murphy, USA TODAY, "52 meaningful gift ideas your wife will love," 11 Dec. 2020 The rear fascia is also revised, with S and JCW models getting an aggressive-looking diffuser. Joey Capparella, Car and Driver, "2022 Mini Cooper Lineup Benefits from Sharper Looks, More Features," 26 Jan. 2021 Most humidifiers are made of plastic that can't withstand the compounds of essential oil, so opt for a diffuser with the distinct purpose of aromatherapy instead. Erin Parker, Glamour, "11 Best Humidifiers for Bedrooms in 2021," 29 Dec. 2020 Grab the InnoGear essential oil diffuser, which was one of our top picks for essential oil diffusers in 2020. Melissa Lee, USA TODAY, "The 5 best Amazon deals you can get this Tuesday," 6 Jan. 2021 Memo Paris Marfa Tuberose Diffuser Leave it to Memo Paris’s Clara and John Molloy to dream up the most heart-stopping diffuser yet. Zoe Ruffner, Vogue, "The 17 Best Essential Oil Diffusers for a Calm Space and Clear Mind," 4 Jan. 2021 There is a diffuser puffing Muji’s lemongrass scent in the corner. Michelle Santiago Cortés, refinery29.com, "Hygge Is Dead. Get To Know The New Cosy.," 26 Nov. 2020 Out back, is a more prominent rear diffuser and a dual-exit exhaust. Connor Hoffman, Car and Driver, "2021 Hyundai Elantra N Line Looks Perfectly Aggressive," 8 July 2020

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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Time Traveler for diffuser

Time Traveler

The first known use of diffuser was in 1645

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Statistics for diffuser

Last Updated

21 Feb 2021

Cite this Entry

“Diffuser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diffuser. Accessed 1 Mar. 2021.

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