Where does “bwydydd” come from?

bwydydd (Welsh) comes from Welsh bwyd, from Middle Welsh bwyt, from Proto-Brythonic buɨd, from Proto-Celtic *beitom, from Proto-Indo-European gʷeyh₃tom, from Proto-Indo-European gʷeyh₃- — to live.

Ancestry of “bwydydd”, step by step

StepLanguageWordMeaning
1Welshbwydfood
2Middle Welshbwytfood
3Proto-Brythonicbuɨdfood
4Proto-Celtic*beitomfood
5Proto-Indo-Europeangʷeyh₃tom—
6Proto-Indo-Europeangʷeyh₃-to live
Every word from Proto-Indo-European gʷeyh₃- →Every word from Proto-Indo-European gʷeyh₃tom →Every word from Proto-Celtic *beitom →