Of*fic"i*nal (?), a. [F., fr. L. officina a workshop, contr.fr. opificina, fr. opifex a workman; opus work + facere to make or do.]
Used in a shop, or belonging to it.
[Obs. or R.]
Kept in stock by apothecaries; -- said of such drugs and medicines as may be obtained without special preparation or compounding; not magistral.
⇒ This term is often interchanged with official, but in strict use officinal drugs are not necessarily official. See Official, a., 3.
© Webster 1913.