Orzo, also known as risoni, is a form of short-cut pasta, shaped like a large grain of rice. Orzo is traditionally made from flour, but it can also be made of whole grain. It is often made with semolina, a type of flour made from durum wheat.
The name orzo is common for this pasta shape in North America, but less so in Italy, where the word means barley. In Greece they are called kritharaki.