Definition of "isobaric" [i•so•bar•ic]

• Having the same pressures, masses, or densities (adjective)
• (of a thermodynamic process) having a constant pressure throughout (adjective)

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• "The Weather Bureau at Washington relies greatly on these isobars for statements concerning local and distant weather forecasts, any shift in isobaric lines showing change in atmospheric pressure."
• "This in a measure accounted for the slight thickness of ice and snow, for the isobaric lines would slope, and consequently what wind there was would flow towards the interior of the archipelago, whose surface was colder than the surrounding ocean."
• "ROCKFORD, Ill. (June 25, 2010) - Thermo Fisher Scientific, the world leader in serving science, today announced the expansion of its isobaric tandem mass tags product line with the new Thermo Scientific Cysteine-Reactive Tandem Mass Tag (cysTMT) Reagents."