Definition of macroseismic in English:

macroseismic

adjective

Geology
  • Of the nature of or relating to a macroseism; (in modern use) designating or relating to those effects of an earthquake that are perceptible without the aid of instruments.

Origin

Early 20th century; earliest use found in James Milne (b. 1865). From macro- + seismic, after macroseism.

Pronunciation

macroseismic

/ˌmakrəʊˈsʌɪzmɪk/