The national legislature. From 1890 to 1947, known as the Imperial Diet (in Japanese, Teikoku Gikai) with an appointed House of Peers and elected House of Representatives. Since 1947 has been known as the National Diet, or Diet (in Japanese, Kokkai), with a House of Councillors and House of Representatives, both of which are elected. The word ""diet"" comes from the Latin dies (day), a reference to the period of time for which a court or assembly met. The word has been used as the English name for the Japanese legislature since 1890.