Definition from Wiktionary, the free dictionary
Proper noun 
- The dispersion of the Jews from the land of Israel.
- The Jews so dispersed, taken collectively.
- A similar dispersion.
Usage notes 
- (similar dispersion): In this sense the term is frequently qualified, for example as “the African Diaspora”.
dispersion of a group of people
Diaspora f (genitive Diaspora, plural Diasporas)