(nonstandard) An inhabitant or citizen of the United States of America.

plural of unit cell

(crystallography) The smallest repeating structure (parallelepiped) of atoms within a crystal, from which the structure of the complete crystal can be inferred.

(obsolete or rare) The United States.

Alternative spelling of antiunion

plural of Unitarian Universalist

plural of unit cost

The cost to acquire a unit of a good or service for a specific quantity that is purchased.

Alternative spelling of reunion

the Kingdom of Great Britain / (nonstandard) United Kingdom