coseismal

/K OW0 S AY1 Z M AH0 L/
noun
  1. 1

    A line on a map connecting places simultaneously affected by a seismic event.

Synonyms

adjective
  1. 1

    Of or pertaining to a line on a map connecting places simultaneously affected by a seismic event.

Source: https://en.wiktionary.org/wiki/coseismal