A line on a weather map connecting points of equal atmospheric pressure. Also called isopiestic.
Any of two or more kinds of atoms having the same atomic mass but different atomic numbers.
isobaric i·so·bar·ic (ī'sə-bär'ĭk, -bār'-) adj.
Having equal weights or pressures.
Of or relating to solutions having the same density as the diluent or medium.