A uranium bomb.

(Internet slang, text messaging) Alternative spelling of cul8r.

(slang, US, derogatory) In North American lesbian culture, a lesbian in a relationship that progresses very quickly, for example moving in together after only a short period of time.

plural of U-Haul lesbian

(slang, US) In North American lesbian culture, the tendency of relationships to progress very quickly, for example when partners move in together after only a short period of time.

United States Virgin Islands Alternative form of US Virgin Islands (a group of islands under the administration of the United States of America, in the Virgin Islands chain of the Caribbean)

A municipality of Croatia.

Alternative form of USSR

Alternative spelling of USCT

(statistics) A nonparametric test of the null hypothesis that the probability that a randomly selected value from one population is less than a randomly selected value from a second population is equal to the probability of being greater. It can be used to investigate whether two independent samples were selected from populations having the same distribution.