Where does “elderdom” come from?

elderdom (Middle English) comes from Old English ealdordōm, from Old English -dōm, from Proto-West Germanic -dōm, from Proto-Germanic -dōmaz, from Proto-Indo-European dʰóh₁mos, from Proto-Indo-European dʰeh₁- — to do, put, place.

Ancestry of “elderdom”, step by step

StepLanguageWordMeaning
1Old Englishealdordōmgreatness, power, authority, lordship, eldership,...
2Old English-dōm-dom: state, condition, power, dominion,...
3Proto-West Germanic-dōm
4Proto-Germanic-dōmazForms nouns denoting the condition or state of...
5Proto-Indo-Europeandʰóh₁mosthat which is put, placed
6Proto-Indo-Europeandʰeh₁-to do, put, place
Every word from Proto-Indo-European dʰeh₁-Every word from Proto-Indo-European dʰóh₁mosEvery word from Proto-Germanic -dōmaz