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officinal (adj.)

"kept in stock by a druggist," c. 1720, from French officinal, from Medieval Latin officinalis, literally "of or belonging in an officina," a storeroom (of a monastery) for medicines and necessaries, in classical Latin "workshop, manufactory, laboratory," contraction of *opificina, from opifex (genitive opificis) "worker, workman, maker, doer" (from opus "work," from PIE root *op- "to work, produce in abundance") + -fex, -ficis "maker, one who does," from facere "to do, make" (from PIE root *dhe- "to set, put"). Related: Officinally.