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 options are endless, from hand soaps and creams to air diffusers, candles, and household cleaners. —Cori Sears, Better Homes & Gardens, 17 Dec. 2024

Body care, hand soaps, candles, wallflowers fragrance refills, fragrance boosters, laundry detergent, hanging fragrance diffusers, and hand sanitizers are all on sale at Bath & Body Works right this second. —Katie Decker-Jacoby, StyleCaster, 13 Dec. 2024

The fragrance is also great for scent layering, so if your giftee fancies a particular diffuser or other bathroom aroma, this will pair effortlessly. —Dahvi Shira, Forbes, 9 Dec. 2024

There are also home fragrances that include a diffuser series. —WWD, 5 Dec. 2024

Word History

Etymology

diffuse entry 2 + -er entry 2

First Known Use

1645, in the meaning defined at sense 1