15-letter words containing f, e, r, i, n
- to make friends — If you make friends with someone, you begin a friendship with them. You can also say that two people make friends.
- towers of hanoi — (games) A classic computer science problem, invented by Edouard Lucas in 1883, often used as an example of recursion. "In the great temple at Benares, says he, beneath the dome which marks the centre of the world, rests a brass plate in which are fixed three diamond needles, each a cubit high and as thick as the body of a bee. On one of these needles, at the creation, God placed sixty-four discs of pure gold, the largest disc resting on the brass plate, and the others getting smaller and smaller up to the top one. This is the Tower of Bramah. Day and night unceasingly the priests transfer the discs from one diamond needle to another according to the fixed and immutable laws of Bramah, which require that the priest on duty must not move more than one disc at a time and that he must place this disc on a needle so that there is no smaller disc below it. When the sixty-four discs shall have been thus transferred from the needle on which at the creation God placed them to one of the other needles, tower, temple, and Brahmins alike will crumble into dust, and with a thunderclap the world will vanish." The recursive solution is: Solve for n-1 discs recursively, then move the remaining largest disc to the free needle. Note that there is also a non-recursive solution: On odd-numbered moves, move the smallest sized disk clockwise. On even-numbered moves, make the single other move which is possible.
- track and field — athletics events
- track-and-field — of, relating to, or participating in the sports of running, pole-vaulting, broad-jumping, etc.: a track-and-field athlete.
- traffic manager — a person who supervises the transportation of goods for an employer.
- traffic offence — a violation of traffic regulations, such as breaking the speed limit
- traffic pattern — Aeronautics. a system of courses about an airfield that aircraft are assigned to fly when taking off, landing, or preparing to land.
- transfer window — the period during the year in which a football club can transfer players from other teams into their own
- transferability — to convey or remove from one place, person, etc., to another: He transferred the package from one hand to the other.
- trifluoperazine — a compound, C 21 H 24 F 3 N 3 S, used as an antipsychotic.
- trondheim fiord — an inlet of the North Sea, extending into N Norway. 80 miles (129 km) long.
- trondheim fjord — an inlet of the Norwegian Sea in Norway, and Norway's third longest fjord, near which is the port of Trondheim
- trout fisherman — a fisherman who catches trout
- ultracentrifuge — a high-speed centrifuge for subjecting sols or solutions to forces many times that of gravity and producing concentration differences depending on the weight of the micelle or molecule.
- under the knife — an instrument for cutting, consisting essentially of a thin, sharp-edged, metal blade fitted with a handle.
- underfulfilling — falling short of satisfactory
- undress uniform — a uniform worn on other than formal occasions.
- unfair practice — unfair competition.
- unfamiliarities — not familiar; not acquainted with or conversant about: to be unfamiliar with a subject.
- unforgivingness — not disposed to forgive or show mercy; unrelenting.
- unfossiliferous — (of sediment, clay, rock, etc) not containing fossils
- uninformatively — in an uninformative manner
- university fees — charges made by a university for the administering of a course of study or an examination
- unverifiability — the quality or state of being unverifiable
- valerian family — the plant family Valerianaceae, characterized by herbaceous plants and shrubs having simple or compound, opposite leaves, clusters of small flowers, and dry, indehiscent fruit, and including corn salad, spikenard (Nardostachys jatamansi), and valerian.
- vector function — a function that assigns a vector to each point in a given set.
- vestimentiferan — any of various marine tubeworms of the phylum Vestimentifera or Pogonophora, which live in upright tubes near hydrothermal vents.
- video frequency — transmission frequency of the television picture.
- videoconference — a teleconference conducted via television equipment.
- viewing figures — the number of people watching a television programme
- viral infection — disease caused by a virus
- warrant officer — (in the U.S. Armed Forces) an officer of one of four grades ranking above enlisted personnel and below commissioned officers.
- weatherproofing — Present participle of weatherproof.
- west nile fever — a viral disease, caused by a flavivirus and spread by a mosquito (Culex pipiens), that results in encephalitis
- west wind drift — Antarctic Circumpolar Current.
- winter flounder — any of various popular food flatfishes, as Parophrys vetulus of the Pacific (English sole) and Pseudopleuronectes americanus of the Atlantic (winter flounder or blackback flounder)