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macroseism
noun
mac·ro·seism
\ˈmakrōˌsīzəm sometimes -sez- or -sāz- or -sēz-\
Definition of macroseism
: a severe or major earthquake — compare microseism
macroseismic
\¦makrō¦sī|zmik also |sm- sometimes -¦se| or -¦sā| or -¦sē|\ adjectiveExplore M-W
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Origin and Etymology of macroseism
International Scientific Vocabulary macr- + -seism
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