There are multiple definitions:

1. receptor kinase(English)

   • LRR
   • Receptors, Enzymes

2. radial keratotomy(English)

   • Ophthalmology

3. Remember/Know [procedure](English)

   • commonly used in recognition-memory experiments to distinguish familiarity from recollection
   • ERP, LPC, RK
   • Memory, Psychology
   • https://doi.org…598-019-45880-y