Definition of isoseismal in English:

isoseismal

adjective

Geology
  • Relating to or denoting lines on a map connecting places where an earthquake was experienced with equal strength.

    • ‘Robert Mallet's detailed study of the 1857 Naples earthquake resulted in the first known isoseismal map.’
    • ‘Figure 1 is an isoseismal map of the earthquake zone, showing the distribution of intensities of shaking, with contours of equal intensity.’

Pronunciation:

isoseismal

/ˌʌɪsə(ʊ)ˈsʌɪzm(ə)l/