16-letter words containing x, i, o, n
- triple-expansion — noting a power source, especially a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders.
- uranium trioxide — a radioactive orange powder, UO 3 , used in the manufacture of some ceramics.
- volatility index — beta (def 6).
- world exposition — world's fair.
- xaverian brother — a member of a congregation of Roman Catholic laymen bound by simple vows and dedicated to education.