dimmer

noun

dim·​mer ˈdi-mər How to pronounce dimmer (audio)
1
: a device for regulating the intensity of an electric lighting unit
2

Examples of dimmer in a Sentence

Recent Examples on the Web
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Some rooms are naturally dimmer than others, often due to small windows or because a space naturally gets less sun. Wendy Rose Gould, Martha Stewart, 8 Feb. 2026 Learn practical skills such as basic plumbing, tiling, outlet swaps, and dimmer installation. Lee Wallender, The Spruce, 31 Jan. 2026 Although the actual size of the moon doesn't change, stargazers may need to get a closer look since this full moon will look smaller and dimmer in the night sky. Valerie Mesa, PEOPLE, 30 Jan. 2026 When trained on a star cluster, binoculars help reveal the true majesty of these sparkling stellar hives, bringing many dimmer stars into view. Anthony Wood, Space.com, 28 Jan. 2026 See All Example Sentences for dimmer

Word History

First Known Use

circa 1896, in the meaning defined at sense 1

Time Traveler
The first known use of dimmer was circa 1896

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Cite this Entry

“Dimmer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dimmer. Accessed 16 Feb. 2026.

Kids Definition

dimmer

noun
dim·​mer ˈdim-ər How to pronounce dimmer (audio)
1
: a device for controlling the amount of light from an electric lighting unit (as the headlights of an automobile or the lights of a room)
2

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