Where does “πτῶσις” come from?

πτῶσις (Ancient Greek) comes from Ancient Greek πίπτω, from Ancient Greek -ωσις, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

πτῶσις (Ancient Greek): falling, a fall; case; inflection

Definitions

  1. falling, a fall; case; inflection

Ancestry of “πτῶσις”, step by step

πτῶσις traces back through two separate lines of ancestry.

via Ancient Greek πίπτω

StepLanguageWordMeaning
1Ancient Greekπίπτωto fall, throw oneself down
2Ancient Greek-ωσιςabnormal condition or state; state, abnormal...
3Ancient Greek-σῐς"suffix forming nouns"
4Ancient Greek-τιςretained after dentals
5Proto-Indo-European-tisDerives abstract/action nouns from verb roots

via Ancient Greek πῑ́πτω

StepLanguageWordMeaning
1Ancient Greekπῑ́πτωto fall; I fall

Words derived from “πτῶσις”

Every word from Proto-Indo-European -tis →Every word from Ancient Greek -σῐς →Every word from Ancient Greek -ωσις →