What exactly is a polymath?

A polymath is a person who knows a lot about a lot of subjects. ... When a person's knowledge covers many different areas, he or she is a polymath. The Greek word for it is polymathes, "having learned much," with poly meaning "much," and manthanein meaning "learn."

What does Poly Matic mean?

: containing more than one and especially more than two atoms polyatomic molecules.