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

People in Western societies spend 80% to 90% of their time under artificial lights, which are much dimmer and less dynamic than sunlight, the researchers noted. —Khloe Quill, FOXNews.com, 22 Dec. 2025

My head is just inches beneath the ceiling of my pod, which has a light dimmer, two clothing hooks, an air purifier, a wide mirror stretching along the head of the capsule, and charger sockets. —Sawdah Bhaimiya, CNBC, 20 Dec. 2025

At other celebrations, including one in Piedmont, attendees said the joy and light of the holiday felt a little dimmer following the shooting. —Da Lin, CBS News, 15 Dec. 2025

One mitigation strategy proposed in the study is placing large satellite constellations below the altitude of space telescopes, where spacecraft spend more time in Earth's shadow and therefore appear dimmer. —Sharmila Kuthunur, Space.com, 12 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