Where does “chemoirradiation” come from?

chemoirradiation (English) comes from English irradiation, from Middle French irradiacion, from Latin irradiatio.

Ancestry of “chemoirradiation”, step by step

chemoirradiation traces back through two separate lines of ancestry.

via English irradiation

StepLanguageWordMeaning
1EnglishirradiationAn act of irradiating, or state of being...
2Middle Frenchirradiacion—
3Latinirradiatio—

via English chemo

StepLanguageWordMeaning
1EnglishchemoClipping of chemotherapy
Every word from Latin irradiatio →Every word from Middle French irradiacion →Every word from English irradiation →