-pus +

(Greek: foot)

A developmental anomaly characterized by an apparent fusion of the lower limbs; especially, the feet.

Symmelia in which there may be three feet (tripodial sympus), two feet (dipodial sympus), one foot (monopodial sympus), or no feet (apodal sympus or sirenomelia).

A subgenus of octopus having two large aquiferous pores on the back of the head.
Xenopus (s), Xenopi (pl)
An African water frog which is native to southern Africa.

From Greek xeno-, "stranger, foreigner" + pous "foot".

Related "foot, feet" units: melo-; ped-; planta-; podo-.