• Abbreviation of negative-positive. It refers to the region where a p-type semiconductor and an n-type semiconductor meet. In a p-type semiconductor, holes, which act as positively-charged particles, are the majority carrier, while in an n-type semiconductor electrons, which are negative particles, are the majority carrier. Also called pn.
  • chemical symbol forneptunium
    (written as Np)
  • abbreviation forneper
    (written as Np)

Information & Library Science

  • abbreviation in Internet addresses, the top-level domain for Nepal