User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-1758220-20140606000127/@comment-8874090-20140613172659

Cottonmouth: I just went to check (i know im late lol) and the pokemon database says on groudon name origin: "ground"-the earth (obviously) and "don"- of great size/importance; lord or master (quoted), so I dunno, maybe it means multiple things.

Here's the source  http://pokemondb.net/pokedex/groudon