PBN stands for:

  • Pyrolytic boron nitride, boron -nitrogen compound, also abbreviated by pBN
  • Performance Based Navigation, a technology to reduce emissions and increase the efficiency of the air traffic
  • Portable Bridge Notation, a file format for exchanging data between playing bridge between different computer programs
  • Phenyl- β -naphthylamine, aromatic and nitrogen- containing antioxidant

Ss stands for:

  • A subject or several subjects in the experimental psychology term for participants in a study
  • Disambiguation
  • Abbreviation