[ahy-suh-bahr] /ˈaɪ səˌbɑr/
Meteorology. a line drawn on a weather map or chart that connects points at which the barometric pressure is the same.
[ahy-suh-bair] /ˈaɪ səˌbɛər/ (Show IPA). Physics, Chemistry. one of two or more atoms having equal atomic weights but different atomic numbers.
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
1864, coined from Greek isos “equal” (see iso-) + baros “weight,” from barys “heavy” (see grave (adj.)). Line connecting places with the same barometric pressure at the same time.
isobar i·so·bar (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.
[ahy-suh-bath] /ˈaɪ səˌbæθ/ noun 1. an imaginary line or one drawn on a map connecting all points of equal depth below the surface of a body of water. 2. a similar line for indicating the depth below the surface of the earth of an aquifer or the top of the water table. /ˈaɪsəʊˌbæθ/ noun 1. […]
[ahy-suh-bath-ik] /ˌaɪ səˈbæθ ɪk/ adjective 1. having the same depth. 2. of or relating to an isobath.
[ahy-suh-bath-uh-thurm] /ˌaɪ səˈbæθ əˌθɜrm/ noun 1. a line on a chart or diagram of a body of water, connecting depths having the same temperature.
/ˌaɪsəʊbaɪˈlætərəl/ adjective 1. (botany) (esp of a leaf) capable of being divided into symmetrical halves along two different planes