Where does “megaearthquake” come from?

megaearthquake (English) comes from English earthquake, from Middle English erthequake, from Middle English erthe, from Old English eorþe, from Proto-West Germanic erþu, from Proto-Germanic erþō, from Proto-Indo-European h₁er- — earth.

megaearthquake (English): An earthquake of very large magnitude

Definitions

  1. An earthquake of very large magnitude

Ancestry of “megaearthquake”, step by step

megaearthquake traces back through two separate lines of ancestry.

via English earthquake

StepLanguageWordMeaning
1EnglishearthquakeA shaking of the ground, caused by volcanic...
2Middle EnglisherthequakeAn earthquake shaking of the ground
3Middle EnglishertheEarth; the world; The Earth's people or...
4Old Englisheorþeground; the planet Earth; dirt
5Proto-West Germanicerþuearth, world; earth, soil
6Proto-Germanicerþōearth
7Proto-Indo-Europeanh₁er-earth

via English mega

StepLanguageWordMeaning
1EnglishmegaVery large; great; excellent
2Ancient Greekμέγαςbig, large; great, mighty, loud; marvelous,...
3Proto-Indo-Europeanmeǵh₂sgreat
Every word from Proto-Indo-European h₁er-Every word from Proto-Germanic erþōEvery word from Proto-West Germanic erþu