> easy to google
Not so easy for the primary source anyway (seeking alpha has a lot of link rot). Best I can find is his letter to the 2011 annual letter, quoted here http://www.investopedia.com/stock-analysis/streetauthority/0...
It seems that "intrinsic value" is a measure of the ability to produce future wealth. With that definition, I put the edit above to include dollars, euro and yen.