同どう重じゅう体たいどうじゅうたいMeanings1nounisobarTechnical term in meteorology for a line on a weather map connecting points of equal atmospheric pressure.天てん気き図ずには等とう圧あつ線せんと同どう重じゅう体たいが描えがかれている。Isobars and isobars are drawn on the weather map.