from The American Heritage® Dictionary of the English Language, 4th Edition
- A trademark for the certification of products that meet certain standards for transmitting data over wireless networks.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several standards for short-range wireless data transmission ( IEEE 802.11); wireless networking by one of these standards.
Trade name developed for the Wireless Ethernet Compatibility Alliance (later Wi-Fi Alliance), after hi-fi ("high fidelity"). (Wiktionary)