Where does “arsyllfa” come from?

arsyllfa (Welsh) comes from Welsh arsyllu, from Welsh syllu, from Middle Welsh syllu, from Proto-Celtic sil-n- — to look.

arsyllfa (Welsh): observatory

Definitions

  1. observatory

Ancestry of “arsyllfa”, step by step

StepLanguageWordMeaning
1Welsharsylluto observe
2Welshsylluto gaze, stare
3Middle Welshsylluto stare
4Proto-Celticsil-n-to look
Every word from Proto-Celtic sil-n- →Every word from Middle Welsh syllu →Every word from Welsh syllu →