ObjectGraph allows you to find definitions based on a word list using a version of the 1913 edition of Webster's Unabridged Dictionary (about 200,000 words) or the Free Online Dictionary of Computing (about 14,000 terms).
Btw, in this December blog post, I pointed out two other services: AOL's PinPoint Shopping and the LookAhead News Index from Surfwax that also offer dynamic search term suggestions. AOL's tool has been online for several months while LookAhead News has been available for about a year. Worth a look.
The Original Search Marketing Event is Back!
SES Denver (Oct 16) offers an intense day of learning all the critical aspects of search engine optimization (SEO) and paid search advertising (PPC). The mission of SES remains the same as it did from the start - to help you master being found on search engines. Early Bird rates extended through Sept 19. Register today!