Bluetooth

American  

[bloo-tooth] / ˈbluˌtuθ /

noun

Computers, Trademark.

1. a brand name for a wireless networking technology that uses short-wave radio frequencies to interconnect cell phones, portable computers, and other wireless electronic devices.

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Bluetooth British  

/ ˈbluːˌtuːθ /

noun

1. a short-range radio technology that allows wireless communication between a computer and a keyboard, between mobile phones, etc

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Etymology

Origin of Bluetooth

C20: after the 10th-century Danish King Harald Blatand (Harold Bluetooth), instrumental in uniting warring factions in Scandinavia

Example Sentences

If Mengucci’s plain talk can’t be received by investors’ antennae or Bluetooth, they’d better check their connectivity.

From Barron's • Jun. 30, 2026

One Bluetooth signal, one app permission, one search-history entry, one fitness-tracker reading, each appears trivial in isolation.

From Slate • Jun. 29, 2026

Klugo’s Bluetooth alarm clock isn’t portable, and the hotel alarms ring too softly for him to hear.

From Los Angeles Times • Jun. 11, 2026

Eventually the company built a Bluetooth earpiece that felt like “pure magic,” said founder Tanay Kothari.

From The Wall Street Journal • May 10, 2026

We found some painkillers, a Bluetooth speaker fully charged, binoculars, and of course, the diapers.

From "Dry" by Neal Shusterman and Jarrod Shusterman