Where does “апсида” come from?

апсида (Russian) comes from Ancient Greek ἁψίς, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

апсида (Russian): apse, apsis, exedra

Definitions

  1. apse, apsis, exedra

Ancestry of “апсида”, step by step

StepLanguageWordMeaning
1Ancient Greekἁψίςnet, mesh; wheel, hoop, disc; Any curved form:...
2Ancient Greek-σῐς"suffix forming nouns"
3Ancient Greek-τιςretained after dentals
4Proto-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 ἁψίς →