Isallobar

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A line joining points of equal pressure change during a specific time interval, especially over three hours.

    "Seasonal variations of atmospheric pressure are illustrated by the isallobaric chart […] which gives the differences between mean pressure in July–August, and in January–February. The position of the isallobars on this chart is largely indicative of the role of monsoonal factors […]"

Example

More examples

"Seasonal variations of atmospheric pressure are illustrated by the isallobaric chart […] which gives the differences between mean pressure in July–August, and in January–February. The position of the isallobars on this chart is largely indicative of the role of monsoonal factors […]"

Etymology

From iso- + allo- + bar.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.