There are multiple definitions:

1. right occipitoposterior position(English)

   • Obstetrics

2. retinopathy of prematurity(English)

   • aka retrolental fibroplasia
   • ICROP, WFDRI
   • Ophthalmology, Neonatal situation, Pediatrics
   • https://doi.org…tha.2021.05.031
   • https://doi.org…bjo.2008.148908

3. ring-opening polymerization(English)

   • strategy to prepare a polypeptide-based amphiphilic polymer containing hydrophilic sericin polypeptide backbone and PBLG side chains
   • PBLG, PBLG-DOX, pH, dox
   • Chemotherapy, Nano-sciences
   • https://doi.org…44.2018.1469686