Where does “photoallergy” come from?

photoallergy (English) comes from English allergy, from German Allergie, from Ancient Greek ἄλλος, from Ancient Greek κρίνω, from Proto-Hellenic kríňňō, from Proto-Indo-European krinyéti, from Proto-Indo-European krey- — to sift, separate, divide.

photoallergy (English): An allergy that is activated by light

Definitions

  1. An allergy that is activated by light

Ancestry of “photoallergy”, step by step

StepLanguageWordMeaning
1EnglishallergyA disorder of the immune system causing adverse...
2GermanAllergieallergy
3Ancient Greekἄλλοςother, another, different, else; in combination...
4Ancient GreekκρίνωTo separate, divide, part, distinguish between...
5Proto-Hellenickríňňō
6Proto-Indo-Europeankrinyéti
7Proto-Indo-Europeankrey-to sift, separate, divide

Words derived from “photoallergy

Every word from Proto-Indo-European krey-Every word from Proto-Indo-European krinyétiEvery word from Proto-Hellenic kríňňō