I believe Princeton Hall sells one. I know there out there. I have had a few in the past. None recent...atleast not in the last 4 years. But i figure you there out there. I would even think Webster\'s would sell one. These would be pretty big however...probably around 2gigs or so since they would have picture\'s and other stuff aswell i imagine. One i did have was 4 cd\'s but it also had a Thesarus in it. I\'ll try to ask around on who made that. Ive seen them on various site\'s...just not recently at all.
Search for like Princeton Hall, Webster\'s, Roget\'s, etc....common dictionary maker\'s.
Strange thing is that i would believe these dictionaires would differ depending on what country you live in. Like in the USA the word color :-) is spelled C O L O R...when the rest of the world spells it C O L O U R. Many words are like this too...so search in your country for one...or maybe even a multilingual dictionary (now that would be HUGE)