One with many skills or fields of knowledge; a renaissance man
A Catholic sense of sin and a social sense of disaster, a fascination with the polymathic and polyglot artist and the strange and often gross and unbidden sources of art. Nor had Burgess taught languages or studied Joyce for nothing…
— Malcolm Bradbury, The Modern British Novel (1993)
You could give Aristotle a tutorial. And you could thrill him to the core of his being. Aristotle was an encyclopedic polymath, an all time intellect. Yet not only can you know more than him about the world.
— Richard Dawkins, The Richard Dimbleby Lecture (1996)
A classical greek word, its parts are poly, many, and mathes, learned. The word “mathematics” does come from the same root word, as understanding numbers was once a sign of being educated.