In the manner of or by means of the encaustic technique; relating to art made with heated wax.
From encaustic (adjective) + -ally (adverb-forming suffix). Describes how something is done using the encaustic method.
When art historians describe a painting 'encaustically rendered,' they're using this formal term to explain the specific technique—it shows how English turns technique names into adverbs for precision in art criticism!
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