Where ‘America’ really came from – The Boston Globe. excerpt: 

The naming-of-America passage in “Introduction to Cosmography” is rich in precisely the sort of word play Ringmann loved. The key to the passage is the curious name Amerigen, which combines the name Amerigo with the Greek word gen, or “earth,” to create the meaning “land of Amerigo.” But the name yields other meanings. Gen can also mean “born,” and the word ameros can mean “new,” suggesting, as many Renaissance observers had begun to hope, that the land of Amerigo was a place where European civilization could go to be reborn — an idea, of course, that still resonates today.