Nice new acronym search tool called Acronyma.com. Clean interface, looks a bit like Teoma. Anyway, you get a search box and a button. You can also choose a language and choose Word or Acronym. If you choose Acronym and type in an acronym, you get a list of matches. ADA got me thirty results including Americans with Disabilities Act, American Dental Association, Average Daily Attendance, etc. It also bolds by importance, I assume by popularity somehow, but it doesn't say anywhere.
If you select Word in the search interface and type in a word it will return results that have that word in them. I typed in the word "random" and got 103 results (!) including Random Access Memory, Random Matrix Theory, and Random Amplified Polymorphic Dna (fancy!).
This looks like it will come in handy.