Variable yield
Variable yield was a feature available to weapons, typically torpedoes or other explosive devices, which allowed for the specification of its yield output, ranging from low-yield to high-yield.
Photonic torpedoes were equipped with a variable yield antimatter warhead. In 2153, The variable yield was described by Malcolm Reed as being able to "knock the com array off a shuttlepod without scratching the hull, or put a three-kilometer crater into an asteroid." (ENT: "The Expanse")
In the 2270s, extremely powerful plasma weaponry was used by V'ger during its journey back to Earth. V'ger generated plasma energy devices of variable yields of which the exact composition or guidance system could not be determined. The weaponry could be set to destroy starships and space stations, or to be set to a level hundreds of times more powerful to devastate the entire surface of a planet. (Star Trek: The Motion Picture)
Photon grenades were short-range, variable-yield explosive devices utilized by various cultures. In 2367, Lieutenant Commander Geordi La Forge suggested transporting photon grenades down to the underground Turkana City in order to incapacitate members of the Alliance, who were holding two Starfleet officers hostage. He noted that, set to minimum yield, the grenades would effectively stun their targets. (TNG: "Legacy")
Photonic charges were a type of variable-yield photonic weapon utilized by various cultures, including Starfleet and the Kazon-Nistrim. In 2372, Seska ordered a Kazon-Nistrim raider to deploy a spread of photonic charges at twenty percent nominal yield to disable Chakotay's Type 8 shuttlecraft. (VOY: "Maneuvers")
A gravimetric charge was a variable-yield explosive device used by Starfleet in the 24th century. (VOY: "The Omega Directive")