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

Your bathroom will smell great without candles or diffusers! —Mary Catherine McAnnally Scott, Southern Living, 17 Aug. 2024

In addition to her sleek and precise partings, Yewande was sure to invest in high-quality human hair extensions that are easily revived in hot water and dried using a diffuser on a cool setting. —L'oréal Blackett, refinery29.com, 16 July 2024

This includes a new front splitter, air outlets (louvers) in the front fenders, changes to the side skirts, underbody and rear diffuser. —Mark Ewing, Forbes, 17 Aug. 2024

Just add one of the fragrance plug’s scents into the diffuser, plug it in, and enjoy the long-lasting scent. —Sophia Beams, Better Homes & Gardens, 17 Aug. 2024

Word History

Etymology

diffuse entry 2 + -er entry 2

First Known Use

1645, in the meaning defined at sense 1