Coseismal

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A line on a map connecting places simultaneously affected by a seismic event.

    "As illustrative of what would occur under the supposed conditions Dr. Schmidt gives a diagram like fig. 32, in which coseismals have been drawn on the assumption that the velocity has increased proportionately with the depth. In this case the earthquake rays, which are perpendicular to successive coseismals, are by refraction turned upwards, and no longer radiate in straight lines."

Adjective
  1. 1
    Of or pertaining to a line on a map connecting places simultaneously affected by a seismic event.
Adjective
  1. 1
    being where earthquake waves arrive simultaneously wordnet

Example

More examples

"As illustrative of what would occur under the supposed conditions Dr. Schmidt gives a diagram like fig. 32, in which coseismals have been drawn on the assumption that the velocity has increased proportionately with the depth. In this case the earthquake rays, which are perpendicular to successive coseismals, are by refraction turned upwards, and no longer radiate in straight lines."

Etymology

From co- + seismal.

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