officinal
/əˈfɪsɪn(ə)l
/ /ɒfɪˈsiːn(ə)l /adjective chiefly historical
(Of a herb or drug) standardly used in medicine.
Derivatives
officinally
Origin
Late 17th century (as a noun denoting an officinal medicine): from medieval Latin officinalis 'storeroom for medicines', from Latin officina 'workshop'.