psychodiagnosis

The story

1. Ancient Greekψῡχή (psūkhḗ)
2. Ancient Greekψῡχο- (psūkho-)
3. Englishpsycho-
4. Proto-Indo-European*dwóh₁
5. Proto-Indo-European*trísinflu.
6. Proto-Indo-European*dwís
7. Ancient Greekδιά (diá)
8. Ancient Greekδια- (dia-)
9. Proto-Indo-European*ǵneh₃-
10. Proto-Indo-European*ǵn̥h₃sḱéti
11. Proto-Hellenic*gignṓskō
12. Ancient Greekγῐγνώσκω (gĭgnṓskō)
13. Ancient Greekδῐαγῐγνώσκω (dĭagĭgnṓskō)
14. Ancient Greekδῐᾰ́γνωσῐς (dĭắgnōsĭs)
15. Latindiagnōsis
16. Englishdiagnosis
17. English todaypsychodiagnosis

From psycho- + diagnosis.