Reinrassig is a German

German language

German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

 zoological term meaning "of pure breed

Breed

A breed is a group of domestic animals or plants with a homogeneous appearance, behavior, and other characteristics that distinguish it from other animals or plants of the same species. Despite the centrality of the idea of "breeds" to animal husbandry, there is no scientifically accepted...

". In Nazi Germany

Nazi Germany

Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

, the term was applied to human races.

By the racial policy of Nazi Germany

Racial policy of Nazi Germany

The racial policy of Nazi Germany was a set of policies and laws implemented by Nazi Germany, asserting the superiority of the "Aryan race", and based on a specific racist doctrine which claimed scientific legitimacy...

, persons who could not trace Aryan

Aryan race

The Aryan race is a concept historically influential in Western culture in the period of the late 19th century and early 20th century. It derives from the idea that the original speakers of the Indo-European languages and their descendants up to the present day constitute a distinctive race or...

 ancestry back at least four generations could be considered nicht reinrassig or impure. Depending on one's ethnicity, this status could be anything from a very minor inconvenience to life threatening. In many cases, for example, persons with some percentage of Jewish ancestry found it difficult to find employment.