isobar
[ ahy-suh-bahr ]
/ ˈaɪ səˌbɑr /
noun
Meteorology.
a line drawn on a weather map or chart that connects points at which the barometric pressure is the same.
Also i·so·bare
[ahy-suh-bair] /ˈaɪ səˌbɛər/. Physics, Chemistry.
one of two or more atoms having equal atomic weights but different atomic numbers.
Compare
isotope.
Origin of isobar
OTHER WORDS FROM isobar
i·so·bar·ism, nounWords nearby isobar
Example sentences from the Web for isobar
In most cases the 29.80-inch isobar furnishes a good limit, out to which the isobars may be traced.
Practical Exercises in Elementary Meteorology |Robert DeCourcy Ward
British Dictionary definitions for isobar
isobar
/ (ˈaɪsəʊˌbɑː) /
noun
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
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
Derived forms of isobar
isobarism, nounWord Origin for isobar
C19: from Greek
isobarēs of equal weight, from
iso- +
baros weight
Medical definitions for isobar
isobar
[ ī′sə-bär′ ]
n.
Any of two or more kinds of atoms having the same atomic mass but different atomic numbers.
A line on a weather map connecting points of equal atmospheric pressure.
Scientific definitions for isobar
isobar
[ ī′sə-bär′ ]
A line drawn on a weather map connecting places having the same atmospheric pressure. The distance between isobars indicates the barometric gradient (the degree of change in atmospheric pressure) across the region shown on the map. When the lines are close together, a strong pressure gradient is indicated, creating conditions for strong winds. When the lines are far apart, a weak pressure gradient is indicated and calm weather is forecast.