Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Meteorology, Geographyisobari‧so‧bar /ˈaɪsəbɑː $ -bɑːr/ noun [countable] technical HEMa line on a weather map joining places where the air pressure is the sameOrigin isobar (1800-1900) iso- + -bar (from Greek baros “weight”) ldoceonline.com
