Definition of ustulation
1 : the action of burning or searing
2 : an operation formerly used in chemistry of expelling one substance from another (as sulfur from an ore) by heat in a muffle
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Origin and Etymology of ustulation
Medieval Latin ustulation-, ustulatio, from Latin ustulatus (past participle of ustulare to burn slightly, scorch, from assumed Latin ustulus slightly burned, from Latin ustus, past participle of urere to burn) + -ion-, -io -ion
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