What term describes a person who leaves their country to move to another country?

The term that accurately describes a person who leaves their country to settle in another country is "emigrant." An emigrant specifically refers to someone who exits their home country with the intent to reside in another location. This term focuses on the act of leaving one's homeland, emphasizing the departure aspect of migration.

In contrast, "immigrant" refers to someone who moves into a new country, focusing on their arrival rather than their departure. "Expatriate" generally refers to individuals who reside outside their native country, often for work or other long-term reasons, but it does not specifically denote the act of leaving their home country. "Visitor" describes someone who travels to a different country for a short period, without the intention of permanent residence. Thus, "emigrant" is the most fitting term for someone who has left their homeland to relocate in another country.