Medicinal

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late Middle English: from Latin medicinalis, from medicina (see medicine).

wiktionary

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From Latin medicīnālis.

etymonline

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medicinal (adj.)

"having healing or curative properties, suitable for medical use," mid-14c., from Old French medicinal and directly from Latin medicinalis "pertaining to medicine," from medicina "the healing art, medicine; a remedy" (see medicine). Related: Medicinally.