isallobar

American  

[ahy-sal-uh-bahr] / aɪˈsæl əˌbɑr /

noun

Meteorology.

1. a line on a weather map or chart connecting points having equal pressure changes.

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isallobar British  

/ aɪˈsæləˌbɑː /

noun

1. meteorol a line on a map running through places experiencing equal pressure changes

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isallobar Scientific  

/ ī-săl′ə-bär′ /

1. A line on a weather map connecting places having equal changes in atmospheric pressure within a given period of time. Isallobars measure pressure tendency, a value that describes both the difference in barometric pressure at the beginning and end of a given time period as well as the pattern—falling, rising, or steady—of pressure change.

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Etymology

Origin of isallobar

1910–15; is- + allo- + Greek báros “weight” ( isobar ( def. ) )