PC Mag includes host of wireless definitions in laptop-buying guide: Cogent, brief, accurate descriptions of common wireless terms are part of this larger package of stories about buying a laptop.
This reminded me to make available the glossary that Adam Engst and I wrote for The Wireless Networking Starter Kit, 2nd Edition. You can download this long glossary of wireless and networking terms free of charge from here in PDF form. (The book is available in both print and electronic editions, by the way.)
I do, of course, have a few extremely minor cavils with PC Mag's definitions:
802.11i: It doesn't necessarily succeed WEP and WPA in the sense that both will be around long after it's released partly because old hardware (most hardware based on pre-2003 chipsets) won't handle AES.
LEAP: EAP is just a generalized messaging protocol; LEAP is a particular implementation of authentication using EAP messaging. Other EAP types include secured methods like EAP-TLS (certificate installed in the client machine manually), and PEAP and EAP-TTLS (secure channel established without independent certificate).
3G: 3G, which stands for third-generation cellular technology, isn't the first generation to allow data transfer, but it would best stated that "3G is the first cellular technology designed from the ground up to transfer data as readily as voice communications." 2G was digital, but focused on voice; 2.5G is a retrofit.
Wi-Fi: It's not just that members pay, but that members pay to have products tested and certified. It's not a rubber stamp: the Wi-Fi Alliance said that 25 percent of the products tested in a recent time period failed on their first go-round and weren't stamped Wi-Fi until they were revised.