Relating to or containing esculetin or compounds similar to it; of or pertaining to edible or medicinal plant compounds.
From esculetin plus the chemical/scientific suffix -ic, forming an adjective describing compounds related to or similar to esculetin.
Esculic is pure chemistry jargon—it's the kind of word that appears maybe five times a year in specialized plant chemistry papers and nowhere else, showing how scientific English creates ultra-specific technical terms.
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