The phrase
"inertial confinement" refers to a method used to create controlled nuclear fusion reactions. It involves compressing and heating a small target containing a fuel, such as hydrogen, with intense pulses of energy to trigger the fusion process. The term "inertial" refers to the force needed to prevent the target from expanding during the process. Overall,
inertial confinement aims to generate powerful energy by squeezing and heating materials until they fuse together.
Full definition