Where does “dúan” come from?

dúan (Middle Irish) comes from Proto-Indo-European *dh₂p-no-, from Proto-Indo-European deh₂p-, from Proto-Indo-European deh₂- — to share, divide.

Ancestry of “dúan”, step by step

StepLanguageWordMeaning
1Proto-Indo-European*dh₂p-no-
2Proto-Indo-Europeandeh₂p-to sacrifice; to lose
3Proto-Indo-Europeandeh₂-to share, divide

Words derived from “dúan

Every word from Proto-Indo-European deh₂-Every word from Proto-Indo-European deh₂p-Every word from Proto-Indo-European *dh₂p-no-