(ˈ)rē|yünyən noun
Etymology: re- + union
1. : a union formed again after separation or discord
a reunion of the dissident sect with its parent body
2.
a. : a meeting of persons long separated
the lover's reunion after the war
a family reunion
b. : an assembly of persons associated by former membership in a group (as a college class)
alumni reunions on the campus during commencement week
a regimental reunion
c. : a social gathering held at a more or less customary time and place : get-together
the moments of their weekly reunion — Joseph Conrad