12-letter words containing p, r, o, c
- tracheoscopy — examination of the interior of the trachea, as with a laryngoscope.
- tractor pull — a contest in which tractors compete to pull the heaviest load.
- transpicuous — transparent.
- tricephalous — with three heads
- trichinopoly — a city in central Tamil Nadu, in S India, on the Kaveri River.
- trichophyton — a parasitic fungus belonging to the genus Trichophyton that can infect human skin, hair, and nails
- trichopteran — trichopterous.
- trichopteron — trichopteran.
- tricorporate — having three bodies
- triple crown — an unofficial title held by a horse that wins the Kentucky Derby, the Preakness, and the Belmont Stakes in a single season.
- trophobiotic — involving, belonging or relating to trophobiosis
- trophotactic — of or relating to trophotaxis
- trophotropic — of or relating to trophotropism
- trophy child — anything taken in war, hunting, competition, etc., especially when preserved as a memento; spoil, prize, or award.
- tropicalised — to make tropical, as in character or appearance.
- tropicalized — to make tropical, as in character or appearance.
- troposcatter — the scattering or extended propagation of radio signals using the local irregularities in the Earth's troposphere
- trouser clip — a clip that is worn around the bottom of a trouser leg to stop the material getting caught in the chain of a bicycle
- trypanocidal — (of a drug, agent, activity, etc) effective in killing trypanosomes
- turbo pascal — (language, product) Borland International's Pascal. Perhaps the first integrated development environment for MS-DOS. Versions 1.0-3.0: standard Pascal with a few extensions Versions 4.0 (1987) and 5.0: separate compilation. Version 5.5: object-oriented. Version 6.0: Turbo Vision OOP library.
- ultracompact — extremely compact, esp of technology that is much smaller than a standard model
- unapproached — not approached; not able to be approached or neared
- unchaperoned — not chaperoned; not accompanied by a chaperone
- uncomparable — capable of being compared; having features in common with something else to permit or suggest comparison: He considered the Roman and British empires to be comparable.
- underproduce — to produce (goods) below full capacity or below demand
- unimportance — a lack of importance
- unit process — any of a number of standard operations, such as filtration or distillation, that are widely used in various chemical and process industries
- unperfection — imperfection
- unprocedural — not procedural, not following proper procedures
- unproclaimed — to announce or declare in an official or formal manner: to proclaim war.
- unprocurable — obtainable.
- unproductive — having the power of producing; generative; creative: a productive effort.
- unpronounced — strongly marked: a pronounced fishy taste.
- unprotective — having the quality or function of protecting: a protective covering.
- unreciprocal — given or felt by each toward the other; mutual: reciprocal respect.
- unrecoupable — to get back the equivalent of: to recoup one's losses by a lucky investment.
- unreproached — not reproached, criticized, or scolded
- unscrupulous — not scrupulous; unrestrained by scruples; conscienceless; unprincipled.
- up-and-comer — likely to succeed; bright and industrious: an up-and-coming young executive.
- upper school — a scholastic division, especially in a private school, including the terminal secondary grades.
- urethroscope — an apparatus for observing the urethra.
- urethroscopy — observation of the urethra by a urethroscope.
- vaporescence — production or formation of vapor.
- variocoupler — a transformer having coils with a self-impedance that is essentially constant but a mutual impedance that can be varied by moving one coil with respect to the other.
- vector space — an additive group in which addition is commutative and with which is associated a field of scalars, as the field of real numbers, such that the product of a scalar and an element of the group or a vector is defined, the product of two scalars times a vector is associative, one times a vector is the vector, and two distributive laws hold.
- velcro strip — a strip or roll of Velcro, able to be cut to the required length
- velociraptor — a small carnivorous dinosaur of the genus Velociraptor , from the late Cretaceous period, capable of leaping, and growing to a length of about 6 feet (2 meters), having feathers, a flat snout, short forelimbs with large handlike talons, and a large sickle-shaped claw on each foot.
- victory ship — a fast, turbine-powered cargo ship of World War II, having a capacity of about 11,000 dead-weight tons.
- video piracy — the unauthorized or prohibited use of audio-visual works covered by copyright law, in a way that violates one of the copyright owner's exclusive rights, such as the right to reproduce the copyrighted work, or to make derivative works
- water pocket — a cavity at the foot of a cliff formed by the falling action of an intermittent stream.