Force-sensitive

Force sensitivity is a condition in the Star Wars Universe where a life form posesses a natural connection to The Force. Though the Force flows through all life, with only rare exceptions (such as the Yuuzhan Vong), outright sensitivity to it is a more uncommon trait. Force sensitivity is a trait established at birth, and is revealed in Episode 1: The Phantom Menace to be the product of Midichlorians, microscopic beings that exist symbioticaly with other life forms, and allow the Force to flow through their hosts. There also appear to be varying levels of Force-sensitivity, or "Force Potential" This could range from a relatively modest level (Such as Tionne, one of Luke Skywalker's first Jedi students), to very high levels (Such as Yoda and Darth Sidious) to exceptionally rare beings of astronomical power (Such as Exar Kun, Anakin Skywalker, and perhaps his descendants Luke and the Solo children).

Although one must be born with Force potential, it can be reduced or taken away by other circumstances, such as extreme levels of physical and emotional trauma (Such as Anakin's climactic battle with Obi-Wan Kenobi at the end of Episode 3: Revenge of the Sith), or through the use of a special Force-technique where the body is literally stripped of its connection to the Force (Nomi Sunrider used this technique on Ulic Qel-Droma, as a last resort to redeem him from the Dark Side of the Force)