What does “extra virgin” mean?

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. I have seen the terms "virgin" and "extra virgin" on bottles of olive oil. What do these terms mean, and how do they affect the flavor and cooking properties of the oil? In the US, "extra virgin" isn't a legally protected term - some of the stuff sold as EVOO here would never, ever pass as it elsewhere. Cooking-wise, the extra virgin stuff is best used in situations where it won't be highly heated.