macroseism

noun

mac·​ro·​seism

ˈmakrōˌsīzəm sometimes -sez- or -sāz- or -sēz-

: a severe or major earthquake compare microseism

macroseismic

¦makrō¦sī|zmik also |sm- sometimes -¦se| or -¦sā| or -¦sē|

adjective

Word History

Etymology

International Scientific Vocabulary macr- + -seism

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