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U.S.S.R. an abbreviation for "Union of Soviet Socialist Republics," the official name of the former Soviet Union.
usual most common or expected; customary. [3 definitions]
UT an abbreviation for Utah.
Utah a state in the western United States. Its capital is Salt Lake City. (abbreviated: UT)
utensil a device, instrument, or container used in a kitchen.
uterus the muscular organ of a female mammal in which the fetus develops before birth.
utility the quality or condition of being useful; usefulness. [2 definitions]
utmost of the highest or greatest degree, amount, or intensity; greatest. [2 definitions]
utter1 to give forth with the voice.
utter2 complete or total; absolute.
Uzbekistan a country in central Asia bordered by Kazakhstan to the north and Afghanistan to the south. The capital of Uzbekistan is Tashkent.
v3 the twenty-second letter of the English alphabet.
VA1 an abbreviation for Virginia.
vacant without activity or contents; empty. [3 definitions]
vacation a period of rest from school, work, or other activities. [2 definitions]
vaccinate to give a vaccine to, so as to protect from a disease.
vaccine a substance used to protect people and animals from very serious diseases. Vaccines contain germs of a particular disease--these germs been killed or changed in a certain way in a laboratory to make them safe. A vaccine goes into a person's body in a shot that is given by a doctor or nurse. After a vaccine is put into a person's body, that person will not get that disease or will get only a mild case.
vacuum a space empty of all matter. [4 definitions]
vacuum cleaner an electrical appliance that cleans floors, carpets, rugs, and upholstery by means of suction.
vagina in most female mammals, the passage leading from the uterus to the opening through which a baby is conceived and born; birth canal.
vain not leading to a desirable or lasting effect. [2 definitions]