isallobars
/aɪˈsæləˌbɑrz/
noun
- Plural of isallobar; lines on a weather map connecting points with equal pressure change over a given time.
- The isallobars on the map were drawn every three millibars.
- The weather report included isallobars to highlight areas of pressure increase.
- Closely packed isallobars suggest a rapidly changing weather pattern.