u3
UFO, unidentified flying object -
Uganda and Zika virus disease, 1947 -
ugly customer, an -
Ugly Duckling, The; a fairy tale +
UHDTV, ultra-high-definition-television +
UHDTV, 4K; TV with a resolution of 3840 pixels +
UK, United Kingdom +
UK and mad cow disease, 1986-1998 -
UK and the plastic bullet, 1973 +
UK and the rocking chair, 1725 +
UK and the rubber bullet, 1970 +
UK and the sandbag, 1700s +
UK and table tennis, 1860s +
UK and the Titanic, 1912 +
UK and the treasury tag, 1912 +
Ukraine and the Chernobyl Nuclear Power Plant, 1977 +
Ukraine and pysankas, 988 +
ultimate cause, the +
ultra-high-definition-television, UHDTV +
ultrasound scan +
ultraviolet, UV -
ultraviolet lamp +
Uluru, a large sandstone rock formation +
umbilical cord +
umbrella +
Umbrella Movement, the objection to the decision of the Government of the PRC +
umbrella stand +
umbrella tree +
unable to distinguish distant objects -
unadulterated nonsense -
uncertain temper, an -
uncle and aunt +
unconditional surrender -
uncooked corn, not edible -
uncooked meat, not edible -
uncooked rice, not edible -
under a cloud -
under a spell -
under age -
under an obligation +
under arrest -
under attack -
under consideration +
under control +
under fire -
under his thumb -
under his wing -
under lock and key +
under no circumstances -
under oath +
under protest -
under repair +
under review +
under separate cover +
under the circumstances +
under the cloak of darkness -
under the sun +
under the weather -
under the wire -
under way, in progress +
under wraps -
undercover agent +
underdeveloped country +
underground parking +
undersell myself -
understand each other +
underwent intensive trials +
undeveloped land -
unequal contest -
unidentified flying object, UFO -
Union Flag, the flag of the UK +
Union Flag: superimposed crosses of St. Andrew, St. George, and St. Patrick, 1801 +
Union of Soviet Socialist Republics, USSR +
United Kingdom, the; UK +
United Kingdom: Great Britain and Northern Ireland +
United Nations, an intergovernmental organization, 1945 +
United States, the; US +
United States of America, the; USA +
universal donor, blood type O +
universal joint +
universal product code +
universal recipient, blood type AB -
Universal Serial Bus, USB +
unknown composer and God Save the Queen, the, 1745 +
unknowns: represented by x, y, z; the +
unleavened bread +
unlike her mother -
unlikely tale, an -
unmanned spaceflights +
unparalleled enthusiasm +
unqualified approval -
unsavory reputation -
unscheduled airline -
unskilled work -
unskilled worker -
unsung heroes -
untapped resources +
untimely death -
untold wealth -
unveiled the portrait +
unworthy of this honor -
unwritten law +
up and about +
up and around +
up and down +
up and up and up +
up escalator, the +
up for sale +
up or down +/-
up till now +
up to date +
up to us to help her +
upcoming events +
uphill work -
upper case +
upper class +
Upper Egypt +
upper hand, the +
upper teeth and lower teeth +
upright piano +
uproot ourselves and live abroad +
ups and downs +/-
upset the applecart -
upset the timetable -
upside-down cake +
upstate New York +
upward mobility +
upward tendency, an +
uranium, an element +
Uranus, the seventh planet in the solar system +
urban renewal +
urged them about the importance of keeping to the schedule +
urgent matter, an +
urinate after sexual intercourse +
urinate before sexual intercourse +
US, the United States +
US, and the atomic bombings of Hiroshima and Nagasaki, the +
US and the Sing Sing Correctional Facility, the, 1826 +
US and THAAD, 1991 +
US and the West Point, 1802 +
US Army Medical Corps and the caduceus, 1902 +
US Numbered Highway System, 1925 +
USA, United States of America +
USA, consisting of 50 states +
USA and the Challenger +
USA and the Great Depression, 1930s -
USA and Jim Crow laws, 1877-1965 -
USA and the Yellowstone National Park, 1872 +
USB, Universal Serial Bus +
USB, the standardization of the connection between the peripherals and computers +
USB flash drive, flash memory with an integrated USB interface +
use it or lose it +/-
use less fuel +
use your head +
use your wits, to use your wisdom +
used to getting up early +
used to go by train +
USSR, consisting of 15 republics, 1922-1991 +
USSR, Union of Soviet Socialist Republics +
USSR, and hammer and sickle, 1923 +
USSR and the Iron Curtain, 1940s-1990s -
USSR and the KGB, 1954-1991 -
Uthman and the Quran, c. 650 -
utility room +
uttered a sigh -
U-turn, a U-shaped path -
Utzon and the Sydney Opera House, 1973 +
UV, ultraviolet -

v3
V engine, a common configuration for an internal combustion engine +
V sign, a victory hand gesture with the palm of the signer facing outward +
V sign, an offensive hand gesture with the palm of the signer facing inward -
v., verb +
V8 engine +
vacant seat, a +
vacuum bottle +
vacuum flask +
vacuum pump +
vacuum tube +
Valenti and MPAA, 1966 +
Valentine's Day, Feb. 14 +
valet parking, parking service +
valid passport, a +
vampire bat -
Van Allen belt, a belt of charged particles several thousand miles above our Earth +
Van Allen and the Van Allen belt, 1958 +
Van Helmont and carbon dioxide, 1625 +
Van Kannel and the revolving door, 1888 +
vandalized the tombstones -
Vandenburg, Harvey, and the ironing board, 1858 +
vanishing act -
vanishing point +
vanity case, a cosmetics case +
vantage point +
vapor lock -
vapor trail +
varicose veins -
variety show +
variety store +
varsity football, the football team representing the school +
vascular system +
Vaseline, petroleum jelly +
Vatican City, the city where the Pope lives +
vault of heaven, the; an arched covering of heaven +
Vauquelin, Robiquet, and amino acid, 1806 +
V-Day, the day of victory +
V-E Day, May 8, 1945 +
V-E Day, the day of victory in Europe for the Allies in WW II +
Velcro, a hook and loop fastener +
vending machine +
venereal disease, a sexually-transmitted disease -
Venetian blind +
Venice and Venetian blinds +
Venn and the Venn diagram, 1880 +
Venn diagram, logic diagram +
venomous snake -
vented his anger +
venture capital +
verb, v. +
verb, subject, and object; VSO +
verbal order +
vernal equinox, March 21st +
Verne and Around the World in Eighty Days, 1872 +
versus, vs. -
vertebral column, a spinal column +
very approachable +
very destructive -
very good +
very high frequency +
very idea!, the -
very image of my father, the +
very last one, the +
very low frequency -
very moving story, a +
very nice indeed +
very well +
Vespa scooter, a motorcycle with a platform for the rider's feet +
Veterans Day in the US, Nov. 11 +
Veterans Day in the US, in honor of all US veterans +
veterinary medicine +
VHS, video home system +
viable plan, a +
vices and virtues +/-
vicious circle -
victim of circumstances, a -
victims of the earthquake -
Victor Company of Japan, Ltd., JVC +
video cassette +
video home system, VHS +
videodisc +
videotape +
Viehe, Wang, Olsen, Forrester, and magnetic-core memory, 1947 +
Vienna General Hospital, The +
Viewstar and the infrared TV remote control, 1980 +
vile smell, a -
Villiard and gamma rays, 1900 +
vindicated his claim to the title, justified +
vintage wine +
vintage year, a +
vinyl siding +
violate the agreement -
violent death, a -
virgin birth +
Virgin Islands +
virgin soil +
virgin wool +
virtual promise, a -
virtual reality, the creation of a hyper-realistic artificial world +
virus, an ultra-microscopic, filter-passing, self-replicating micro-organism -
VisiCal, an electronic spreadsheet +
visionary scheme -
visitation rights +
visiting nurse +
visiting professor +
visitor parking +
visual aid +
visual area, located in the occipital lobe of the brain +
visual arts +
Visual Cliff, the; an experiment +
vital functions +
vital organs: heart, lungs, and brain +
vital signs: blood pressure, pulse, and respiration +
vital statistics: births and deaths +
vital statistics: the measurements of a woman's bust, waist and hips (informal) +
vitreous humor +
vitamin A, an anti-infective +
vitamin B1, a sulfur-containing vitamin +
vitamin B1, an antineuritic, antiberi-beri +
vitamin B complex, an antineuritic, antiberi-beri, antianemic +
vitamin C, an antiscorbutic +
vitamin D, an antirachitic +
vitamin deficient -
vitamin E, an antioxidant +
vitamin K, an antihemorrhagic +
vitamins, the essential food factors +
vivid description, a +
V-J Day, Aug. 15, 1945 +
V-J Day, the day Japan surrendered to the Allies in WW II +
V-neck, a sweater with a V-shaped neckline +
vocal cords +
vocational guidance, advice about careers +
vocational school, a trade school +
vodka, alcoholic liquor distilled from rye +
voice box, the larynx +
voice vote, a vote taken by the loudness of response +
voiced her opinion +
volleyball, a team sport +
Volta and the battery, 1800 +
voluntary muscle +
voluntary work +
voluntary worker +
volunteer army +
von Briesen and the Legal Aid Society, 1896 +
von Helmholtz and the ophthalmoscope, 1850 +
von Liebig and fertilizers, 1840 +
von Liebig and mirror silvering, 1856 +
von Neumann and computer virus, 1949 +
von Neumann and the game theory, 1928 +
von Sacher-Masoch, a journalist and writer, 1836-1895 -
vote down -
voted by proxy, voted by authorization +
voting machine +
vowed vengeance against their oppressor +
vowels: a, e, i, o, u +
vowels and consonants +
vs., versus -
VSO; Biblical Hebrew, Classical Arab, Filipino, Hawaiian... +
VSO; verb, subject, and object +
vulcanized rubber +
VX, venomous nerve agent X -
vying with each other for the title, to compete +