Where does “tetrápodo” come from?

tetrápodo (Spanish) comes from Spanish -podo, from Ancient Greek πούς, from Proto-Indo-European pṓds, from Proto-Indo-European póds, from Proto-Indo-European ped- — to walk, to step; to stumble, to fall.

tetrápodo (Spanish): tetrapod

Definitions

tetrapod

Ancestry of “tetrápodo”, step by step

Step	Language	Word	Meaning
1	Spanish	-podo	-pod
2	Ancient Greek	πούς	foot; leg; Greek foot or pous, the ancient Greek...
3	Proto-Indo-European	pṓds	foot
4	Proto-Indo-European	póds	foot
5	Proto-Indo-European	ped-	to walk, to step; to stumble, to fall

Every word from Proto-Indo-European ped- →Every word from Proto-Indo-European póds →Every word from Proto-Indo-European pṓds →