A Trill ritual in which a joined host meets each of the symbiont's previous hosts, whose memories are temporarily placed in the bodies of willing friends.
The zhian'tara is the Trill rite of closure. A Guardian uses telepathy to draw the memories of each former host out of the symbiont and into a volunteer, so that the current host can talk to their predecessors face to face.
Jadzia Dax undergoes it in Facets in 2371. Kira Nerys embodies Lela, Miles O'Brien the nervous Tobin, Leeta the gymnast Emony, Quark the mother Audrid, Julian Bashir the pilot Torias and Benjamin Sisko the murderer Joran, who is kept behind a force field. Odo takes on Curzon.
Curzon and Odo merge so well that they decide to stay joined, and Jadzia must confront the man who once dismissed her from the initiate programme. He admits that he did so because he had fallen in love with her, and agrees to return.