The USS Defiant is a fictional starship from the *Star Trek* universe, specifically featured in the series *Star Trek: Deep Space Nine*. It is classified as a Defiant-class starship, designed for combat and tactical missions. The ship is notable for its advanced weaponry and defensive systems, making it one of the most formidable vessels in the Federation. Commissioned to protect the space station Deep Space Nine, the USS Defiant plays a crucial role in various conflicts, including battles against the Borg and the Dominion. Its compact design and powerful engines allow for high-speed maneuvers, enhancing its effectiveness in combat situations.