megaseism

noun

mega·​seism

ˈmegəˌsīzəm sometimes -sez- or -sāz- or -sēz-

: a violent earthquake

megaseismic

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

adjective

Word History

Etymology

International Scientific Vocabulary mega- + seism

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