hyphenism

From hyphen +‎ -ism.

hyphenism (countable and uncountable, plural hyphenisms)

1. The use of hyphenated terms to describe people's identities, e.g. in Irish-American.
   • 1924, Edward F. McSweeney, The Gift of Black Folk: The Negroes in the Making of America, page 2:

     What may be called, for want of a better term, the colonial spirit, which is the essence of hyphenism, has persisted in this country to hamper national progress and national unity.

• mishyphen