THESAURUS
isobar
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
ROGET THESAURUS
isobar
Air
N
air, common air, atmospheric air, atmosphere, aerosphere, open air, sky, welkin, blue sky, cloud, weather, climate, rise and fall of the barometer,
isobar, aerology, aerometry, aeroscopy, aeroscopy, aerography, meteorology, climatology, pneumatics, eudioscope, baroscope, aeroscope, eudiometer, barometer, aerometer, aneroid, baroscope, weather gauge, weather glass, weather cock, exposure to the air, exposure to the weather, ventilation, aerostation, aeronautics, aeronaut, containing air, flatulent, effervescent, windy, atmospheric, airy, aerial, aeriform, meteorological, weatherwise, in the open air, a la belle etoile, al fresco, sub jove dio.