stertorous s of breathing having a heavy snoring sound Usage(s) A cheap space heater is "a wattage hog with a stertorous fan and a grinning orange mouth. From the bunk above Seaman Ward's issued the stertorous breathing of a 250-lb. The door was burst in time for a doctor and two others to hear a stertorous voice say: "I am--am--John Wilkes-- Booth.