Marcion

The story

1. Proto-Indo-European · derived from*-kos“forming desubstantival adjectives”
2. Old Latin · derived fromMāvors“Mars, god of war”
3. Latin · derived fromMārcus
4. Ancient Greek · derived fromΜᾶρκος
5. Koine Greek · derived fromΜᾱρκῑ́ων“Marky, little Mark, son of Mark”
6. Late Latin · borrowed fromMārciōn
7. English todayMarcion

From Late Latin Mārciōn, from Koine Greek Μᾱρκῑ́ων (Mārkī́ōn, “Marky, little Mark, son of Mark”), from Ancient Greek Μᾶρκος (Mârkos) + -ίων (-íōn, “-son: forming patronymics”), from Latin Mārcus, from Mārs + -cus (“forming adjectives”), from Old Latin Māvors (“Mars, god of war”) and Proto-Indo-European *-kos (“forming desubstantival adjectives”).

Words from the same roots