Renaissance man

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A man who has broad intellectual interests and is accomplished in areas of both the arts and the sciences.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Alternative spelling of renaissance man.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a scholar during the Renaissance who (because knowledge was limited) could know almost everything about many topics
• noun a modern scholar who is in a position to acquire more than superficial knowledge about many different interests