A megahertz is one million (or 106) hertz. See hertz, kilohertz (one thousand hertz), gigahertz[?] (109 hertz), terahertz[?] (1012 hertz), and petahertz[?] (1015 hertz).
... can refer to: Christiania - the name of Oslo, from 1624 to 1925. The Free State of Christiania - a partially self-governing neighborhood in the city of ...