preheat v 1: heat beforehand; "Preheat the oven!"
23 Moby Thesaurus words for "preheat": chafe, cook, electric-heat, fire, fire up, foment, gas-heat, heat, hot, hot up, hot-air-heat, hot-water-heat, mull, overheat, recook, reheat, steam, stoke up, superheat, tepefy, warm, warm over, warm up