
Nationality in English is pronounced as [ˌnæʃəˈnæləti] (UK) or [ˌnæʃəˈnæləti] (US). To remember the word, you can break it down into "nation" meaning "country" and "ality," which is a suffix indicating a state or quality. Put together, "nationality" refers to the state of being a national or a citizen of a particular country.
For example: "She holds dual nationality," meaning she is a citizen of two countries.
Additionally, "citizenship" is a related term that refers to the rights and obligations of being a citizen, pronounced as [ˈsɪtɪzənʃɪp]. "Nation" is the word for a country or an ethnic group, pronounced as [ˈneɪʃn].