The institute of electrical and Electronics Engineers released the seventh edition of the "Authoritative Dictionary of IEEE Standards Terms" earlier this month.
The reference work contains 35,000 definitions for words, abbreviations and IT-industry-famous acronyms.
Its yours for $113 ($90 for IEEE members). Find out more about the publication at www.ieee.org.
Another good source for technical definitions is the subscription-based ComputerSelect Web site at www.computer-select.com.