Where does “psychophylaxis” come from?

psychophylaxis (English) comes from English phylaxis, from Ancient Greek φύλαξις, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

psychophylaxis (English): Mental hygiene; the development of healthy emotions, attitudes and behavior

Definitions

  1. Mental hygiene; the development of healthy emotions, attitudes and behavior

Ancestry of “psychophylaxis”, step by step

StepLanguageWordMeaning
1EnglishphylaxisProtection against infectious disease
2Ancient Greekφύλαξιςan act of watching, guarding; a security
3Ancient Greek-σῐς"suffix forming nouns"
4Ancient Greek-τιςretained after dentals
5Proto-Indo-European-tisDerives abstract/action nouns from verb roots
Every word from Proto-Indo-European -tis →Every word from Ancient Greek -σῐς →Every word from Ancient Greek φύλαξις →