- You may be looking for hyper-thermic charge.
A hypothermic charge was a weapon used by Klingons. When used against a planet, such devices were capable of burning off its atmosphere.
During the Federation-Klingon War of the 2250s, on stardate 4789.6, hypothermic charges were used against Kelfour VI, with eleven thousand casualties as a result. (DIS: "The War Without, The War Within")