<human>:  When did the Nazis start to use the term ‘Aryan’?
<bot>: The Nazis started to use the term “Aryan” in the 1930s. The word “Aryan” comes from the Sanskrit word “arya”, which means noble, good, or noble-minded. The Nazis believed that they were the “master race” and that other races were inferior. They also believed that the Aryan race was the source of all civilization. They believed that Jews were not part of the Aryan race and therefore not true Germans.