Bluetooth

American

[bloo-tooth] / ˈbluˌtuθ /

noun

Computers, Trademark.

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.

Bluetooth British

/ ˈbluːˌtuːθ /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Bluetooth

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Its TM-B e-bike is decked out with features, including Bluetooth, GPS, Wi-Fi, a built-in touchscreen, and software that supports over-the-air updates.

From Los Angeles Times • May 1, 2026

Minute-by-minute location tracking is based on GPS data, pings to nearby cellphone towers, Bluetooth beacons and Wi-Fi connections.

From The Wall Street Journal • Apr. 26, 2026

Meanwhile, your phone continuously senses and records your communications, info about your health, what apps you’re using, and tracks your location via cell towers, GPS satellites and Wi-Fi and Bluetooth.

From Salon • Apr. 23, 2026

There are also emerging apps that use mesh networks relying on Bluetooth, which can bring connectivity where there is none.

From BBC • Jan. 18, 2026

Dr. Zinchenko sighed and touched her Bluetooth earpiece.

From "Escape from Mr. Lemoncello's Library" by Chris Grabenstein

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023