plural -s
: the action of burning or searing
: an operation formerly used in chemistry of expelling one substance from another (as sulfur from an ore) by heat in a muffle

Word History


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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Dictionary Entries Near ustulation

Cite this Entry

“Ustulation.” Dictionary, Merriam-Webster, Accessed 24 Jun. 2024.

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