[AlexeyBelov]

What's the generally understood sense?

To me it's extraordinary because it's above what I'd consider ordinary. Let's say most people have Bachelor's and can't (or won't) start their own business. If you have someone with a Master's and also a startup owner they are extraordinary by that definition.

The USCIS has a much more concrete definition with different parameters. Is it an ideal one? No. But I guess any new improved definition still won't be universally accepted, especially by other talented people.