Where does “eruptivity” come from?

eruptivity (English) comes from English eruptive, from French éruptif — eruptive.

eruptivity (English): The state or quality of being eruptive

Definitions

  1. The state or quality of being eruptive

Ancestry of “eruptivity”, step by step

eruptivity traces back through two separate lines of ancestry.

via English eruptive

StepLanguageWordMeaning
1EnglisheruptiveThat erupts or bursts forth; Accompanied by...
2Frenchéruptiferuptive

via English ity

StepLanguageWordMeaning
1Englishity—
2Ingrian-uUsed to form nouns from verbs
Every word from French éruptif →Every word from English eruptive →