# Bluetooth

/ˈbɫuˌtuθ/ (US) · CEFR B1 · Noun

Source: https://englishreference.com/word/bluetooth
Updated: 2026-08-15

## Definition

a wireless technology that lets electronic devices like phones, headphones, and computers talk to each other over short distances.

For teachers: a short-range wireless communication technology that uses radio waves to transmit data between fixed and mobile devices. When capitalised, it refers to the specific industry standard and trademark.

## Examples

- I connected my phone to the car using Bluetooth.
- Most modern smartphones use Bluetooth to stream high-quality audio to wireless headphones without needing a physical cable.
- The security protocol for Bluetooth has evolved significantly to prevent unauthorised devices from intercepting data packets during the initial pairing process between a peripheral and a host.

## Usage notes

- Often used as a modifier before another noun, such as 'Bluetooth speaker' or 'Bluetooth connection'.

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