A·mer·i·can·ism 
(ə-mĕrĭ-kə-nĭz′əm)
(ə-mĕrĭ-kə-nĭz′əm)n.
1. A custom, trait, or tradition originating in the United States.
2. A word, phrase, or idiom characteristic of English as it is spoken in the United States.
3. Allegiance to the United States and its customs and institutions.