Discover the full meaning and definition of "nationality," including its fascinating etymology and practical examples. This entry clarifies a fundamental concept for understanding identity, citizenship, and global relations. What's the difference between race, ethnicity, and nationality? We explain all three concepts, with helpful examples. Definition of NATIONALITY in the Definitions.net dictionary. Meaning of NATIONALITY. What does NATIONALITY mean? Information and translations of NATIONALITY in the most comprehensive dictionary definitions resource on the web. 5 meanings: 1. the state or fact of being a citizen of a particular nation 2. a body of people sharing common descent, history,.... Click for more definitions.