Where does “chemoprophylactic” come from?

chemoprophylactic (English) comes from English prophylactic, from Latin prophylacticus, from Ancient Greek προφυλακτικός, from Ancient Greek -ικός, from Ancient Greek -κός, from Proto-Indo-European -ḱos — -y, -ic.

chemoprophylactic (English): Of or pertaining to chemoprophylaxis; A...

Definitions

  1. Of or pertaining to chemoprophylaxis; A...

Ancestry of “chemoprophylactic”, step by step

chemoprophylactic traces back through two separate lines of ancestry.

via English prophylactic

StepLanguageWordMeaning
1EnglishprophylacticA medicine which preserves or defends against...
2Latinprophylacticus
3Ancient Greekπροφυλακτικόςprophylactic
4Ancient Greek-ικόςof or pertaining to, in the manner of; -ic
5Ancient Greek-κόςforms adjectives with the sense of 'of or...
6Proto-Indo-European-ḱos-y, -ic

via English chemo

StepLanguageWordMeaning
1EnglishchemoClipping of chemotherapy
Every word from Proto-Indo-European -ḱosEvery word from Ancient Greek -ικόςEvery word from Ancient Greek -κός