19-letter words containing r, u, l, i
- triangle inequality — the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities.
- triangulum australe — a small bright triangular constellation in the S hemisphere, lying between Ara and the Southern Cross, that contains an open star cluster
- tricalcium silicate — a component of cement, Ca 3 SiO 5 , also used in food to prevent caking.
- trifacial neuralgia — tic douloureux.
- triple counterpoint — invertible counterpoint involving three transposable voices.
- trooping the colour — a military ceremony, performed by regiments of the British army and the Commonwealth, in which the regimental colour or flag is marched past ranks of troops
- trusteeship council — a United Nations body that supervises the government of a territory by a foreign country
- tuamotu archipelago — a group of about 80 coral islands in the S Pacific, in French Polynesia. Pop: 15 973 (2002; including the Gambier Islands). Area: 860 sq km (332 sq miles)
- tubular steel chair — a chair with a frame made of tubular steel
- turn a blind eye to — to pretend not to notice or ignore deliberately
- tussock caterpillar — the larva of a tussock moth.
- ultracrepidarianism — noting or pertaining to a person who criticizes, judges, or gives advice outside the area of his or her expertise: The play provides a classic, simplistic portrayal of an ultracrepidarian mother-in-law.
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- ultrasonic cleaning — the use of ultrasound to vibrate a piece to be cleaned while the piece is immersed in a cleaning fluid. The process produces a very high degree of cleanliness, and is used for jewellery and ornately shaped items
- unclassified degree — a degree that has not been given a grade because it is of a low standard
- under police escort — If you go somewhere or are taken somewhere under police escort, you go there accompanied by a police escort.
- under the influence — the capacity or power of persons or things to be a compelling force on or produce effects on the actions, behavior, opinions, etc., of others: He used family influence to get the contract.
- under the spotlight — If someone or something comes under the spotlight, they are thoroughly examined, especially by journalists and the public.
- universal recipient — a person with blood type AB, able to receive blood from a person of any blood type but able to donate blood only to a person with the same blood type
- university hospital — a hospital that is affiliated with a university. University hospitals provide clinical education and training to future and current doctors, nurses, and other health professionals, in addition to delivering medical care to patients
- unnatural practices — acts which are deemed to be contrary to expected standards of human behaviour
- vaginal intercourse — intercourse involving insertion of the penis into the vagina
- venus of willendorf — a village in NE Austria, near Krems: site of an Aurignacian settlement where a 4½ inches (11 cm) limestone statuette (Venus of Willendorf) was found.
- vesicular exanthema — an infectious viral disease of swine, characterized by blisters on the snout, mucous membranes, and feet.
- victor emmanuel iii — 1869–1947, king of Italy 1900–46.
- vinculum matrimonii — the bond of matrimony.
- visual basic script — (language) (VBScript) Microsoft's scripting language which is an extension of their Visual Basic language. VBScript can be used with Microsoft Office applications and others. It can also be embedded in web pages but can only be understood by Internet Explorer. Visual Basic is a BASIC variant with object-oriented features. Objects include applications, windows and selections.
- volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.
- with flying colours — If you pass a test with flying colours, you have done very well in the test.
- xenon tetrafluoride — a colorless, crystalline compound, XeF 4 , prepared by heating a gaseous mixture of fluorine and xenon.
- yellowtail flounder — a righteyed flounder, Limanda ferruginea, inhabiting waters along the Atlantic coast of North America, having a yellowish tail fin and rusty-red spots on the body: once commercially important, now greatly reduced in number.