-pod

1.
a combining form meaning “one having a foot” of the kind or number specified by the initial element; often corresponding to Neo-Latin class names ending in -poda, with -pod, used in English to name a single member of such a class:
cephalopod.
Compare -ped.
Origin
< Neo-Latin < Greek -pod-, stem of -pous, adj. derivative of poús foot
British Dictionary definitions for -pod

-pod

combining form
1.
indicating a certain type or number of feet: arthropod, tripod
Word Origin
from Greek -podos footed, from pous foot
-pod in Science
-pod  
A suffix meaning "foot." It is used in the scientific names of the members of many groups of organisms, such as arthropod, an organism having "jointed feet," and sauropod, a dinosaur having "lizard feet." It is also used in the names of different kinds of limbs or limblike body parts, such as pseudopod, the "false foot" of an amoeba.