Definition of officinal in English:

officinal

Pronunciation /əˈfɪsɪn(ə)l//ɒfɪˈsiːn(ə)l/

adjective

historical
  • (of a herb or drug) standardly used in medicine.

Origin

Late 17th century (as a noun denoting an officinal medicine): from medieval Latin officinalis ‘storeroom for medicines’, from Latin officina ‘workshop’.

Pronunciation

officinal

/əˈfɪsɪn(ə)l//ɒfɪˈsiːn(ə)l/