isobar(redirected from Isobars)
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1. A line on a weather map connecting points of equal atmospheric pressure. Also called isopiestic.
2. Any of two or more kinds of atoms having the same atomic mass but different atomic numbers.
i′so·bar′ic (-bär′ĭk, -băr′-) adj.
1. (Physical Geography) a line on a map connecting places of equal atmospheric pressure, usually reduced to sea level for purposes of comparison, at a given time or period
2. (General Physics) physics any of two or more atoms that have the same mass number but different atomic numbers: tin-115 and indium-115 are isobars. Compare isotope
[C19: from Greek isobarēs of equal weight, from iso- + baros weight]
1. a line drawn on a weather map or chart that connects points at which the barometric pressure is the same.
2. Also, i′so•bare` (-ˌbɛər) one of two or more atoms having equal atomic weights but different atomic numbers.
[1860–65; < Greek isobarḗs of equal weight]
i`so•bar′ic (-ˈbær-) adj.
i′so•bar`ism (-ˌbɑr-) n.
A line drawn on a weather map connecting places having the same atmospheric pressure.
A line drawn on a map linking places with the same atmospheric pressure.
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|Noun||1.||isobar - (meteorology)an isogram connecting points having equal barometric pressure at a given time|
weather chart, weather map - (meteorology) a map showing the principal meteorological elements at a given time and over an extended region
meteorology - the earth science dealing with phenomena of the atmosphere (especially weather)