There are many borrowed words from Greek and Latin that are used as prefixes in English.
Examples: pyro- relating to fire, hydro- relating to water, geo- relating to the earth etc.
What is the equivalent prefix to mean bone or skeleton?
Specifically, someone who performs divination with bones by way of combining it with the suffix -mancer/-mancy.
For example: pyromancer/pyromancy.
There are words for "bone" in both Greek and Latin, but unsure of which is the proper way to use it as a prefix.