what is wi-fi and full form of wi-fi

here i will show you that what is wi-fi and full form of wi-fi.

-->Wi-Fi is a trademark of the Wi-Fi Alliance that may be used with certified products that belong to a class of wireless local area network (WLAN) devices based on the IEEE 802.11 standards.

-->A communication system that uses low-power microwave radio signals to connect laptop computers, PDAs, and web-enabled cell phones to the Internet.

-->full form of wi-fi is  Wireless fidelity.