isobar

  1. Noun.  (meteorology) A line drawn on a map or chart connecting places of equal or constant pressure.
  2. Noun.  (context, nuclear physics) Either of two nuclides of different elements having the same mass number.
  3. Noun.  (context, thermodynamics) A set of points or conditions at constant pressure.

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This entry was last updated on RefTopia from its source on 3/20/2012.