i ‧ so ‧ bar /ˈaɪsəbɑː $ -bɑːr/ BrE AmE noun [countable] technical
[ Date: 1800-1900 ; Origin: iso- + -bar (from Greek baros 'weight' ) ]
a line on a weather map joining places where the air pressure is the same
i ‧ so ‧ bar /ˈaɪsəbɑː $ -bɑːr/ BrE AmE noun [countable] technical
[ Date: 1800-1900 ; Origin: iso- + -bar (from Greek baros 'weight' ) ]
a line on a weather map joining places where the air pressure is the same
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012