Re*un"ion (?), n. [Pref. re- + union: cf. F. r'eunion.]
A second union; union formed anew after separation, secession, or discord; as, a reunion of parts or particles of matter; a reunion of parties or sects.
An assembling of persons who have been separated, as of a family, or the members of a disbanded regiment; an assembly so composed.
© Webster 1913.