Sustained in example sentence
I remember watching "Lost Missile" (actually throwing a fit until my brother and several cousins at whose home I was an overnight guest agreed to watch it with me - I was, from time to time, the Eric Cartman of the 1960s - sorry, guys) and being somewhat embarrassed when the sustained wave of million-degree heat emerged as a plot device - even as a second-grader I knew that a mere missile just couldn't carry the energy around for that much heat or devastation over more than the duration and limited radius of a nuclear detonation.