nationism in English dictionary nationism Meanings and definitions of "nationism" (sociolinguistics) The practical concerns of running a nation, especially seen as divorced from emotional beliefs about national identity. noun (sociolinguistics) The practical concerns of running a nation, especially seen as divorced from emotional beliefs about national identity. more Grammar and declension of nationism nationism ( plural nationisms) nationism (plural nationisms) more Sample sentences with "nationism" Declension Stem Try again Authors