The interbreeding or sexual union of whites and non-whites resulting in the birth of mulattos. In later use also: the racial, social, and cultural mix resulting from such interbreeding; multiculturalism.
Origin
Mid 19th century. From mulatto + -ism.
Definition of mulattoism in US English:
mulattoism
noun
The interbreeding or sexual union of whites and non-whites resulting in the birth of mulattos. In later use also: the racial, social, and cultural mix resulting from such interbreeding; multiculturalism.