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Official Site: Paramount Television

Jadzia Dax ( ), played by Terry Farrell, was a main character during the first six seasons of the science fiction television series Star Trek: Deep Space Nine. She is the station's chief science officer, and is close friends with commander Benjamin Sisko and Bajoran first officer Kira Nerys. Later in the series, she becomes involved with the Klingon character Worf, and they marry during the sixth season of the show. Her character is killed by Gul Dukat during the sixth season finale (due to Terry Farrell's desire to pursue a role on the upcoming TV Show Becker with Ted Danson). The character of Dax re-emerges in the seventh season premiere in the form of Ezri Dax.

Jadzia Dax is a joined Trill. Though she appears to be a young woman, Jadzia lives in symbiosis with a wise and long-lived creature, known as a symbiont, named Dax. The two share a single, conscious mind, and her personality is a blending of the characteristics of both the host and the symbiont. As such, Dax has access to all the skills and memories of the symbiont's seven previous hosts.

At the beginning of the series, Jadzia has just recently been joined with the symbiont Dax after the natural death of the previous host, Curzon Dax. Curzon had been a friend and mentor to station Commander Benjamin Sisko, and Jadzia and Sisko continue this friendship despite the change in circumstances. Throughout the series, Sisko refers to Dax by the affectionate nickname "Old Man." She begins the series at the rank of Lieutenant; at the start of the fourth season, she becomes a Lieutenant Commander and remains one until her death in the sixth-season finale.

During the first few seasons, Dax is pursued romantically by Dr. Julian Bashir. Dax consistently but politely rebuffs him, though she later admits that she somewhat enjoyed the attention (cf. "Starship Down"). After Jadzia's death, Dax's new host Ezri begins dating Bashir.

Jadzia Dax has not been a contender in any CBUB matches.