4-letter words containing o, i
- zibo — a city in central Shandong province, in NE China.
- zino — (physics) The superpartner of the Z-boson.
- zion — a hill in Jerusalem, on which the Temple was built (used to symbolize the city itself, especially as a religious or spiritual center).
- zoic — (rare) Showing traces of life; containing organic remains.
- zori — a Japanese sandal, often made of straw or rubber and consisting of a flat sole held on the foot by a thong passing between the first and second toes.