The acronym “Wi-Fi” stands for "Wireless Fidelity." It refers to a technology that allows electronic devices to connect to a local area network (LAN) using radio waves instead of wired connections. Wi-Fi enables internet access and local networking for devices such as laptops, smartphones, and smart home appliances. Named for its brand and the popularity it gained, Wi-Fi typically operates in frequency bands like 2.4 GHz and 5 GHz, supporting data transmission over short to medium distances while offering convenience and mobility.