It can be spelled either way.
Foot fetishism is actually
Podophilia [wrongdiagnosis.com], I might add.
Read a medical dictionary, why don't you.
It can be spelled Paedophile or Pedophile, they are both pronounced the same way and mean the same thing as pertaining to the
actual medical definitions.
Pedo is just an alt. spelling of Paedo is all.
Podo is what means foot. Just like
Podoconiosis [tomsshoes.phpwebhosting.com].
See? I've got a medical condition to back what I say up.
NOW "Ped" and "Pedo" CAN refer to foot... however, it also is referred to as Soil and Children.
Because Pedi - like Pedicure, for example. Means foot.
But Pedo and Peda mean children.
Thus, concluding that in medical terms:
Pedo/Paedo = Children
Podo = Foot
Peda, Pedi, and pedo are prefixes that comes from the Greek prefix “παίδ-”(pais) commonly meaning "boys" as well as "children"
Foot units include:
Melo-, Ped-, Planta-, and Podo-
Thus concluding there is more than one word for each meaning.
Thus concluding that while one word can literally mean something, this does not mean it is the definition that is correct.
So there. You are both correct and incorrect.