What does the acronym Wi-Fi stand for?

The term Wi-Fi stands for Wireless Fidelity, which reflects the technology's ability to provide wireless connectivity to devices. It is a brand name that signifies compliance with specific standards developed by the Institute of Electrical and Electronics Engineers (IEEE), particularly those pertaining to wireless networking. The term conveys a level of quality and reliability in wireless communications, akin to the idea of "hi-fi" in audio equipment.

In contrast, the other options, while they may sound plausible, do not accurately define Wi-Fi. 'Wide Fidelity' and 'Worldwide Fidelity' do not represent any recognized standards in technology or networking, thereby failing to capture the essence of what Wi-Fi represents. Similarly, 'Wireless Frequency' incorrectly describes a more technical aspect of how wireless signals operate but does not relate directly to the branding or standardization aspect of Wi-Fi technology. Thus, Wireless Fidelity is the correct and widely accepted meaning of the acronym Wi-Fi.