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.
(wÄ«râ²lÄ­s) adj. 1. Having no wires. 2. Of or relating to communication by transmitting electromagnetic signals through the air: a wireless network; a wireless telephone. 3. Chiefly British Of or relating to radio or communication by radiotelegraphy or radiotelephony.