Definition of coseismal in English:
 coseismal
adjective kəʊˈsʌɪzm(ə)lkoʊˈsaɪsməl
Relating to or denoting points on the earth's surface affected by an earthquake simultaneously.
 Example sentencesExamples
-  The field oscillation measurements allow to discover coseismal, near seismic and pre-seismic electromagnetism.
 -  Several of Bull's research sites are within Sequoia and Kings Canyon National Parks since they are close enough to the San Andreas Fault for coseismal rock falls.
 -  The purpose of the coseismal curves based upon these records is in general two - fold.
 
noun kəʊˈsʌɪzm(ə)lkoʊˈsaɪsməl
A line on a map connecting coseismal points.
 Example sentencesExamples
-  The rupture has declared itself in an unmistakable rift observable at the surface, and coseismals are therefore unnecessary for the determination if this important factor.
 
Origin
  
Mid 19th century: from co- 'jointly' + seismal (from Greek seismos 'earthquake', from seien 'to shake').
   Definition of coseismal in US English:
 coseismal
adjectivekoʊˈsaɪsməlkōˈsīsməl
Relating to points on the earth's surface affected by an earthquake simultaneously.
 Example sentencesExamples
-  The purpose of the coseismal curves based upon these records is in general two - fold.
 -  Several of Bull's research sites are within Sequoia and Kings Canyon National Parks since they are close enough to the San Andreas Fault for coseismal rock falls.
 -  The field oscillation measurements allow to discover coseismal, near seismic and pre-seismic electromagnetism.
 
nounkoʊˈsaɪsməlkōˈsīsməl
A line on a map connecting coseismal points.
 Example sentencesExamples
-  The rupture has declared itself in an unmistakable rift observable at the surface, and coseismals are therefore unnecessary for the determination if this important factor.
 
Origin
  
Mid 19th century: from co- ‘jointly’ + seismal (from Greek seismos ‘earthquake’, from seien ‘to shake’).