You can search here for acronyms and for words used in acronyms.
An acronym is a label formed from the beginnings of words (Greek: acro [head] and nym [word]) -- or very rarely, from letters in the middle of words. There is no requirement that an acronym be pronounceable as a normal word (this is a curious myth perpetuated by American dictionaries): IBM is just as much an acronym as LASER.
Thanks to all those contributors who submitted new and improved entries, and who helped with their suggestions for getting this service back online.
The submission interface is going to take a little longer to redesign, but that too will be back in operation Real Soon Now.