For body parts:
* Ped-: This is the most common combining form for "foot", derived from the Latin word "pes" (foot). Examples: pedestrian, pedal, pedometer.
* Pod-: This combining form, also from Greek "pous", is used for "foot" in certain contexts. Example: podiatrist.
For measurement:
* Foot-: This is the straightforward combining form for "foot" as a unit of measurement. Example: foot-long, footage, foot-pound.
Other options:
* -podium: This refers to a raised platform, originally used for speakers.
* -pedestal: This refers to the base of a statue or other object.
Ultimately, the best combining word for "foot" depends on the specific context and meaning you want to convey.