dimmer

noun

dim·​mer ˈdi-mər 

1

: a device for regulating the intensity of an electric lighting unit

2

: low beam

Examples of dimmer in a Sentence

Recent Examples on the Web

Mallama noted that satellites in the Amazon Leo constellation (which used to be known as Project Kuiper) are significantly dimmer than the BlueBirds and slightly fainter than most Starlink satellites, which orbit at a lower altitude of around 300 miles (480 km). —Tereza Pultarova, Space.com, 25 Jan. 2026

Roger had a joyful, luminous spirit, and the world is dimmer without him. —Glenn Garner, Deadline, 18 Jan. 2026

Strategically using dimmers, light-filtering and -blocking window coverings, and temperature-changing light sources also offer sensory support. —Kristina McGuirk, Better Homes & Gardens, 10 Jan. 2026

The year’s first supermoon in January coincides with a meteor shower, but the moonlight likely will obscure the dimmer fireballs. —Marcia Dunn, Fortune, 28 Dec. 2025

Word History

First Known Use

circa 1896, in the meaning defined at sense 1

Phrases Containing dimmer

• dimmer switch

Rhymes for dimmer

• brimmer
• glimmer
• grimmer
• nimmer
• rimmer
• shimmer
• simmer
• skimmer
• slimmer
• swimmer
• timmer
• trimmer

Kids Definition

dimmer

noun

dim·​mer ˈdim-ər 

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

: low beam