Isobar

1. (n.) A line on a map connecting points of equal barometric pressure, or for a certain period (mean height), as for a year; an isopiestic line.

2. (n.) The quality or state of being equal in weight, especially in atmospheric pressure. Also, the theory, method, or application of isobaric science.

Thesaurus Entries

air mass, anticyclone, artificial isotope, cold front, cold sector, cyclone, deuterium, front, heavy hydrogen, high, high-pressure area, isomer, isometric, isometric line, isopiestic line, isotherm, isothermal line, isotone, isotope, low, low-pressure area, nuclear isomer, occluded front, polar front, protium, radioactive isotope, radioisotope, squall line, stationary front, strontium 90, warm front, weather map, wind-shift line