Where does “megaseism” come from?

megaseism (English) comes from English seism, from French séisme, from Ancient Greek σεισμός, from Ancient Greek σείω, from Proto-Hellenic *tséihō.

megaseism (English): A large or severe earthquake

Definitions

  1. A large or severe earthquake

Ancestry of “megaseism”, step by step

StepLanguageWordMeaning
1EnglishseismA shaking of the Earth's surface; an earthquake...
2Frenchséismeearthquake
3Ancient Greekσεισμόςshaking, shock; earthquake; storm
4Ancient GreekσείωI shake
5Proto-Hellenic*tséihō—
Every word from Proto-Hellenic *tséihō →Every word from Ancient Greek σείω →Every word from Ancient Greek σεισμός →