O'Neill Cylinders

[RogerBW]

Originally Posted by Brett

Question: is "O'Neill cylinder" going to be misleading if used in the common sense without explanation?

I concur with other respondents: almost certainly not. The cylinder design (for purists, the double counterrotating cylinders, which allow you to maintain attitude control without using reaction mass) might be more accurately known as Island Three, but I don't see that getting into slang. "O'Neills" does seem a pretty likely candidate term for "free-floating space habitats large enough to be livable".