Definition and meaning of nationalism: Nationalism is a political ideology that emphasizes and glorifies national identity within a population, usually based on shared history, culture, and language. It includes a belief that each nation has the right to determine its own destiny and that the collective well-being of the nation should take priority over individual interests. Nationalism can have positive applications, but it is also important to be conscious and mindful of the potential abuses of nationalism, such as increased xenophobia and racial discrimination.