What is wifi?

Wireless Fidelity, a wireless form of data transfer.

Wi-Fi (IPA: /ˈwaɪfaɪ/) is the trademark for the popular wireless technology used in home networks, mobile phones, video games and other electronic devices that require some form of wireless networking capability. In particular, it covers the various IEEE 802.11 technologies (including 802.11a, 802.11b, 802.11g, and 802.11n).

Wi-Fi technologies are supported by nearly every modern personal computer operating system, most advanced game consoles, laptops, smartphones and many printers and other peripherals.

Check this website, for the definition of a wi-fi→

http://mobileoffice.about.com/od/findingusinghotspots/ss/wificonnecttut.htm

Wireless Internet

wireless..likes everyone says the same word. LOL!

wireless internet. there might be more to it but i know if a place says it has free wifi that means you could bring in your laptop and get free internet connection there

Perception of a slightly offensive odor.

wifi stand for wireless fidelity.The term Wi-Fi was created by an organization called the Wi-Fi Alliance, which oversees tests that certify product interoperability. it is used to connect access point,adhoc mode.

Wi-Fi is short for wireless fidelity. It refers to a local area network which uses high frequency radio signals to send and receive data over short distances (approx. 200 feet).

wifi is a service that is proved by a wifi device it is use to connect to internet.a signal is passed to a serten area arround wifi device like for example 100 m.
so that any wifi recever can use the internet within the device range.there are two type of wifi network
1)unsecure(any user with wifi recever can acess the internet)
2)secure(some user have given user name and password and only those user can acess the net)


sorry for gramatical mistake

Wi-Fi, which stands for wireless fidelity, in a play on the older term Hi-Fi, is a wireless networking technology used across the globe. Wi-Fi refers to any system that uses the 802.11 standard, which was developed by the Institute of Electrical and Electronics Engineers (IEEE) and released in 1997. The term Wi-Fi, which is alternatively spelled WiFi, Wi-fi, Wifi, or wifi, was pushed by the Wi-Fi Alliance, a trade group that pioneered commercialization of the technology.

In a Wi-Fi network, computers with wifi network cards connect wirelessly to a wireless router. The router is connected to the Internet by means of a modem, typically a cable or DSL modem. Any user within 200 feet or so (about 61 meters) of the access point can then connect to the Internet, though for good transfer rates, distances of 100 feet (30.5 meters) or less are more common. Retailers also sell wireless signal boosters that extend the range of a wireless network.

Hope it helps you.

wifi in simple word is the internet that you can use anywhere there is wifi modem.

the modem is box shaped and has 4 antenas emmiting radio frequency in all directions per sec and for a short distance.

go near it with your laptop access it and use it to surf the net.....

Wi-Fi (pronounced /ˈwaɪfaɪ/) is a class of wireless local area network (WLAN) devices based on the IEEE 802.11 standards. Today, a Wi-Fi device is installed in many personal computers, video game consoles, smartphones, printers, and other peripherals, and virtually all laptop or palm-sized computers.

Because of the close relationship with its underlying standard, the term Wi-Fi is often used by the public as a synonym for IEEE 802.11 technology.[1][2] However, Wi-Fi is a trademark of the Wi-Fi Alliance, a global, non-profit association of companies that promotes WLAN technology and certifies products as Wi-Fi-CERTIFIED if they conform to certain standards of interoperability. Not every IEEE 802.11-compliant device is certified by the Wi-Fi Alliance, sometimes because of costs associated with the certification process. The lack of the Wi-Fi logo does not imply that a device is incompatible with Wi-Fi-CERTIFIED devices.

Means wireless that allow you to connect to the network (internet) by using such as laptop, PSP, etc:. That have Wi-fi in it. Go to the store and go to electronics section and look for says Wi-Fi on the each boxes.

Teetotal gave a nice answer. To just add on.
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Its a standard 802.11 protocol for networking set by the WiFi Alliance a non-profit organization. To read more here is a link to their site. http://www.wi-fi.org/about_overview.php