isallobar

[ ahy-sal-uh-bahr ]

/ aɪˈsæl əˌbɑr /

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noun Meteorology.

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

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Origin of isallobar

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

Words nearby isallobar

isagogic, isagogics, Isai, Isaiah, Isaian, isallobar, isallotherm, isandrous, isanomal, isanthous, Isar

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for isallobar

isallobar

/ (aɪˈsæləˌbɑː) /

noun

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for isallobar

isallobar

[ ī-săl′ə-bär′ ]

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.