Heatardation Share definition Flag The effect of excessive hot weather which causes people to think, speak and move very slowly. "Sorry I didn't read that book; it's 100 degrees out and I'm suffering from a severe case of heatardation." Heatardation by People Paula August 19, 2012 0 0 Get merch Get the Heatardation mug. Buy Now — $32.95 See more merch