There are multiple definitions:

1. relative refractory period(English)

   • ARP
   • Physiology

2. radical retropubic prostatectomy(English)

   • TUIP, TURP
   • Prostate, Surgery

3. readily releasable pool(English)

   • functionally defined as a small subset of the many vesicles in a presynaptic bouton that is more readily released than other vesicles
   • AMPA, EPSC, RIM
   • Synapse
   • https://doi.org…onb.2016.12.012