isallobar


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isallobar

Meteorol a line on a map running through places experiencing equal pressure changes
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

isallobar

[īs′al·ə‚bär]
(meteorology)
A line of equal change in atmospheric pressure during a specified time interval; an isopleth of pressure tendency; a common form is drawn for the three-hourly local pressure tendencies on a synoptic surface chart.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.