plural of United Stateser

(nonstandard, often humorous) A resident or citizen of the United States

(rail transport, US) a diesel locomotive with a body that is less than full width, apart from the cab.

(rail transport, US) a diesel or electric locomotive with a full-width body for its entire length.

Synonym of contiguous United States

Abbreviation of Union of Soviet Socialist Republics.

plural of root of unity

(number theory) An element of a given field (especially, a complex number) x such that for some positive integer n, xⁿ = 1.

(set theory) One of the axioms in axiomatic set theory, equivalent to the statement that a union exists for any set, containing exactly all the elements contained within the sets within that set.

(rare) Abbreviation of Union of Soviet Socialist Republics.