Source : Webster's Revised Unabridged Dictionary (1913)

Pharmacopoeia \Phar`ma*co*p[oe]"ia\, n. [NL., from Gr.
   farmakopoii:`a the preparation of medicines; fa`rmakon
   medicine + poiei^n to make.]
   1. A book or treatise describing the drugs, preparations,
      etc., used in medicine; especially, one that is issued by
      official authority and considered as an authoritative
      standard.

   2. A chemical laboratory. [Obs.] --Dunglison.

Source : WordNet®

pharmacopoeia
     n : a collection or stock of drugs