Where does “heterophil” come from?

heterophil (English) comes from English Phil, from English Philip, from Middle English Philip, from Ancient Greek φίλιππος, from Ancient Greek φιλέω, from Ancient Greek ἀτέλεια, from Ancient Greek ἀ-, from Proto-Hellenic hə- — together, one.

Ancestry of “heterophil”, step by step

heterophil traces back through two separate lines of ancestry.

via English Phil

StepLanguageWordMeaning
1EnglishPhilAbbreviation of philosophy; short form of...
2EnglishPhilipOne of the twelve disciples of Jesus in the Bible; one of the seven deacons
3Middle EnglishPhilip
4Ancient Greekφίλιπποςfond of horses
5Ancient GreekφιλέωI love, like, regard highly; I treat kindly,...
6Ancient Greekἀτέλειαexemption from public burdens, immunity
7Ancient Greekἀ-The alpha privativum, used to make words that...
8Proto-Hellenichə-same; together
9Proto-Indo-Europeansm̥-one; with, together
10Proto-Indo-Europeansem-together, one

via English hetero

StepLanguageWordMeaning
1EnglishheteroHeterosexual: of, pertaining to, or being a...
2EnglishheterosexualSexually attracted to members of the opposite...
3English-sexualForms a noun or adjective describing a state or...
4EnglishsexualArising from the fact of being male or female;...
5Latinsexuālissexual
6Latinsexusdivision; sex; gender
7Proto-Italicseksus
8Proto-Indo-Europeanséksus
9Proto-Indo-Europeansek-to cut, cut off, sever
Every word from Proto-Indo-European sem-