the act of scorching or burning.
Pharmacology. the roasting or drying of moist substances.
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How to use ustulation in a sentence
The greater part, however, require the process of ustulation, from which they derive many advantages.A Dictionary of Arts, Manufactures and Mines | Andrew Ure
British Dictionary definitions for ustulation
the act or process of searing or burning
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012