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1. agriculture combustion taking place in compost due to the heat produced by decomposition
2. archaic the condition of being firefanged or set ablaze
3. (intr) agriculture (of compost heaps etc) to combust due to the heat produced through decomposition
4. (tr) archaic to scorch, to cause to catch on fire, to set ablaze
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014