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.

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

The device uses what the company calls a six-layer hybrid positioning system, combining GPS, assisted GPS, Wi-Fi positioning, Bluetooth, cellular network data, and active radar-style search functions.

From Slate • Jun. 20, 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

Now a must-have iPhone accessory, the development of the first generation was infamous inside Apple for infighting among Ternus’s peers as they argued over how to keep the wireless ear buds connected via Bluetooth.

From The Wall Street Journal • Apr. 21, 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