A more thorough explanation:

Definition: Mixed blood refers to the relationship between persons whose ancestors are of different races or nationalities.

For example, in the past, the term "mixed blood" was used in treaties and statutes to refer to persons of half or more or less than half Indian blood, derived either from the father or from the mother. This means that if someone had a Native American parent and a non-Native American parent, they would be considered mixed blood.

This term is now considered archaic and can be seen as offensive. It is important to use respectful and inclusive language when referring to people of different racial or ethnic backgrounds.