Made at wintertree-software.com,
To make it worse, they have a medical dictionary, which can be licensed for multiple use inclusion for $199.00.
I mentioned it to JB once but I'm not sure he remembered. May be worth sending a lot of requests for it to the suggested update board and if they get enought it may hit their gameplan.
@Jon, I tried cutting and pasting from an free medical dictionary word listing, but I think they needed reformatting (word, then spacing then an i) for each word. I did not create a macro and gave up.