technical: a group of people used in a study who have something (such as age or social class) in common. Depression was a common problem for people in that age cohort.echnical: a group of people used in a study who have something (such as age or social class) in common. Depression was a common problem for people in that age cohort.
Wi-Fi is the name of a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections. A common misconception is that the term Wi-Fi is short for  wireless fidelity , however this is not the case. Wi-Fi is simply a trademarked phrase that means IEEE 802.11x.
Related Terms. Wi-Fi is the name of a wireless networking technology that uses radio waves to provide high-speed network and Internet connections. This Webopedia Did You Know... article explains Wi-Fi technology: how it works and misconceptions about Wireless Fidelity. Wi-Fi Definition: What is Wi-Fi.