Where does “h₂eyd-ro-m” come from?

h₂eyd-ro-m (Proto-Indo-European) comes from Proto-Indo-European h₂eyd- — to swell; to swell; swelling, tumour, abscess.

Ancestry of “h₂eyd-ro-m”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	h₂eyd-	to swell; to swell; swelling, tumour, abscess

h₂eyd-ro-m — Etymology, Origin & Word History | Etymology Explorer