I really like the way you deal with the etymology of the word, and I think the general definition you present is engaging and interesting. I'd cut down on the ellipses, since it's pretty clear that some text is going to follow in most cases. I like the way the design ends with a picture of a popinjay. In the beginning, I think you could put more text on the screen--with fewer clicks at the beginning, the pace of the Prezi will be better.