1. rheumatology-the branch of medicine dealing with the study and treatment of pathologies of the muscles or tendons or joints. medical specialty, medicine-the branches of medical science that deal with nonsurgical techniques.
This multiculturalism, or diverse cultural environment, is why America is commonly referred to as a 'melting pot'. The American political culture is based on the important principle that America welcomes and celebrates people from many different countries, races and religions.
In a general sense, a subculture is a smaller group that fits into the larger culture. If you think of American culture as the big umbrella, the subcultures are all of the smaller groups around the country that fall into that category.