'宽带' (kuān dài) literally means 'wide band' — '宽' (kuān) means 'wide' or 'broad', and '带' (dài) means 'band' or 'strip'. Together, they refer to broadband internet, a high-speed data transmission technology that supports multiple signals and traffic types simultaneously over a wide frequency range. Unlike traditional dial-up connections, broadband provides always-on, fast, and stable internet access.

This term is used almost exclusively in technical and everyday contexts related to internet service, networking equipment, and digital infrastructure. You’ll see it on service provider websites, router settings, and in conversations about home or office internet plans. While the characters individually have other meanings (e.g., '带' can mean 'to bring'), in this compound, they function as a fixed technical noun with no variation in meaning or pronunciation.