When a Jew moves to Israel, it is said that he/she is making Aliyah. Aliyah means arising, ascending, going up. It is said that moving to Israel is moving to a higher spiritual plane, thus the usage of the term aliyah. Aliyah is also used to refer to someone coming up to read from the Torah.

However, Aliyah is not the proper opposite to Diaspora. Aliyah is what an individual does. The opposite of Aliyah is Yeridah, when a single person leaves Israel.

The opposite of Diaspora, which is the communal dispersion of the Jewish people, is the communal return of the Jewish people to Israel. This return has not yet happened. There are still more Jews outside of Israel than inside of it. Such a return would likely be called the Geula or Redemption. Another opposite for the Exiling of the Jews (Diaspora) is Kibbutz Galuyot (Ingathering of the Exiles).