There are multiple definitions:

1. United States Pharmacopeia(English)

   • Mack Publishing Co., Easton, PA
   • EP, JP
   • Standards, Pharmacology / pharmaceutics

2. ubiquitin specific peptidase(English)

   • USP1, USP4, USP18

3. Universidade de Sao Paulo(English)

   • EMJH, LPF
   • Education
   • https://doi.org…55/2018/1813745