There are multiple definitions:

1. PubMed Central(English)

   • free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine
   • NIH, NLM
   • Organizations (documentation), Biomedical journals
   • https://www.ncb…lm.nih.gov/pmc/

2. perfect magnetic conductor(English)

   • Biophysics, Magnetism

3. posterior medial cortex(English)

   • posterior cingulate, precuneus
   • ATL, BG, OFC, STG, TPJ
   • Anatomy, Brain (dys)function
   • https://doi.org…0415-018-8762-6

4. pontine micturition center(English)

   • electrical stimulation results in an increase of the intravesical pressure, representing contraction of the bladder
   • Brain (dys)function, Urology, Nervous activity - (para)sympathetic
   • https://doi.org…74247-6.50013-4

5. percutaneous mitral commissurotomy(English)

   • AF, AT, MR, MS, SR, AS, BAV, BNP, LFLG, LVEF, LVESD, SAVR, SBP, TAVR, TEER, VKA
   • Cardiology, Surgery
   • https://doi.org…03/KP.2013.0193
   • https://doi.org…acc.2023.05.061