materia medica

/M AH0 T IH1 R IY0 AH0 M EH0 D IH0 K AH0/
noun
  1. 1

    The study of the origin, preparation, dosage and administration of medical drugs.

Synonyms

noun
  1. 1

    The substances so used.

Source: https://en.wiktionary.org/wiki/materia%20medica