Here are some examples:
* Pediatrics: The branch of medicine dealing with the care of children.
* Pedophile: A person who is sexually attracted to children.
* Pedagogy: The art or science of teaching, especially as applied to children.
* Pedometer: A device that measures the number of steps taken.
* Pedestal: A base or support for a statue or other object. (This word's origin is more complex and is ultimately derived from "pes" meaning "foot").
It's important to note that the prefix "ped" can have different meanings depending on the word it's attached to. It is crucial to consider the context in which the word is used to understand its meaning.