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[bcholmes]

I'm looking for a file/database/XML document/whatever that lists English words and their correlates them with their root word. Something that would tell me that "held/hold/holding/etc." are all forms of "hold" I'm hoping that the datasource in question:

• Is available under an open source or similar license
• Is machine readable/parsable
• Is fairly complete

Anyone familiar with such a creature? I've found several spelling trie databases, but haven't found a root words database.