isobront

[ahy-suh-bront]
noun Meteorology.
  1. a line on a weather map or chart connecting various points where a given phase of thunderstorm activity occurred simultaneously.

Origin of isobront

1885–90; iso- + -bront < Greek brontḗ thunder
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of isobront