1A word, expression, or other feature that is characteristic of American English.
- ‘the term is an Americanism dating back to the late nineteenth century’
- 1.1A custom, quality, or institution characteristic of the United States.
- ‘Americanisms such as the barbecue and the swimming pool’
2mass noun Attachment or allegiance to the traditions, institutions, and ideals of the United States.
- ‘Americans in Europe have almost all preserved their Americanism’
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