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Definition of megaquake

megaquake

/ˈmɛɡ.ə.kweɪk/
meg · a · quake
Plural:megaquakes
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megaquake Lexical Profile

megaquake Game Scores & Validity

• noun

1

An extremely powerful and destructive earthquake, typically having a moment magnitude of 8.0 or greater and often occurring along a subduction zone.

Example

"Seismologists warned that the coastal region must upgrade its infrastructure to withstand a potential megaquake."

Synonyms
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Antonyms
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• Nearby Words

megaplex
megapode
megaproject
megaquake
megastar
megastardom
megastore

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Megaquake. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/megaquake
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