n-

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Chemistry[edit]

  • n-, a lowercase prefix in chemistry denoting the straight-chain form of an open-chain compound in contrast to its branched isomer
  • N-, an uppercase prefix in chemistry denoting that the substituent is bonded to the nitrogen, as in amines

Mathematics, science and technology[edit]

The italicized letter n is used in mathematics to denote an arbitrary number (usually a non-negative integer).