The Debian word file (/usr/share/dict/words) contains approximately 62,000 words, but I've been looking, without success, for something more exhaustive. Has anyone come across anything that I may find useful?

For reference, the English language contains approximately 500,000 words, barring specific scientific terminology. A word list that extensive would be that ideal, but I don't expect to find anything like that.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram