A citation would be nice. Also, what countries would be second-world with that definition?
EDIT: Note that I asked what countries would be SECOND-world with this definition. Not third-world.
https://en.wikipedia.org/wiki/Third_World
>Also, what countries would be second-world with that definition?
In present-day English, the Third World is "the developing countries of Europe, Asia, Latin America, and Africa".[1] Third world countries in Europe, Latin America, Asia, and Africa include Russia, Albania, Nigeria, India, Pakistan, Indonesia, Dominican Republic, Cuba, South Africa, and Armenia. The term usually suggests poverty and low level of industrial development and thus it is the opposite of the term developed nations. This usage is considered by some to be offensive.
About the origin of those terms see [2].
The Second World term was seldom used in Europe even during the 70s as far as I can remember. There is no more second world now. We jump straight from first to third world. It feels sadly right if we agree that the gap is widening.
By the way, nobody in Europe would think Russia is a third world country. It's first world.
[1] https://en.wikipedia.org/wiki/Second_World
[2] http://www.nationsonline.org/oneworld/third_world_countries....
"Third-world" doesn't mean what you think it means. Switzerland is a third-world country.