12-letter words containing p, o, e, t, r
- tribespeople — members of a tribe; people living a tribal lifestyle
- tricephalous — with three heads
- trichopteran — trichopterous.
- trichopteron — trichopteran.
- tricorporate — having three bodies
- trimethoprim — a synthetic crystalline compound, C 11 H 18 N 4 O 3 , usually combined with a sulfonamide as an antibiotic preparation in the treatment of urinary tract infections and pneumocystis pneumonia.
- triphosphate — a salt derived from triphosphoric acid.
- triple bogey — a score of three strokes over par on a hole.
- triple crown — an unofficial title held by a horse that wins the Kentucky Derby, the Preakness, and the Belmont Stakes in a single season.
- triple point — the particular temperature and pressure at which the solid, liquid, and gaseous phases of a given substance are all at equilibrium with one another.
- triple voile — a lightweight, sheer voile of silk or synthetic fibers constructed in plain or novelty weaves.
- trolley pole — a pole that transfers the electrical current from the overhead wire to the trolley bus
- 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
- trou-de-loup — a conical or pyramidal pit with a pointed stake fixed vertically in the center, rows of which are dug in front of a fortification to hinder an enemy's approach, formerly used chiefly against cavalry.
- trouble spot — an area in which trouble exists or is expected to develop: There are several diplomatic trouble spots in Central America.
- troubleproof — not easily disturbed, disabled, injured, or put out of working order.
- 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
- tutor period — (in British secondary schools) a school period for which a tutor group comes together with their tutor
- type founder — a person engaged in the making of metallic types for printers.
- type i error — the error made in the statistical testing of a hypothesis by rejecting the null hypothesis when it is actually true.
- typing error — an error made while using a keyboard to write something
- un-opportune — appropriate, favorable, or suitable: an opportune phrase for the occasion.
- under-report — to give an insufficient account or report of
- underexploit — to make insufficient use of
- unimportance — a lack of importance
- unimportuned — without being forced or impelled
- unit process — any of a number of standard operations, such as filtration or distillation, that are widely used in various chemical and process industries
- unpatronized — having few or no patrons
- unperfection — imperfection
- unperforated — pierced with a hole or holes: Punch out along the perforated line.
- unproductive — having the power of producing; generative; creative: a productive effort.
- unprofitable — being without profit; not showing or turning a profit: a series of unprofitable ventures.
- unprohibited — to forbid (an action, activity, etc.) by authority or law: Smoking is prohibited here.
- unpropertied — owning property: the propertied class.
- unprotective — having the quality or function of protecting: a protective covering.
- unprotesting — an expression or declaration of objection, disapproval, or dissent, often in opposition to something a person is powerless to prevent or avoid: a protest against increased taxation.
- unreportable — not able to be reported, relayed, or spoken of
- unsupportive — giving support.
- urethroscope — an apparatus for observing the urethra.
- urethroscopy — observation of the urethra by a urethroscope.
- van der post — Sir Laurens (Jan). 1906–96, South African writer and traveller. His works include the travel books Venture to the Interior (1952), The Lost World of the Kalahari (1958), and Testament to the Bushmen (1984) and the novels The Hunter and the Whale (1967) and The Admiral's Baby (1996)
- 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.
- ventripotent — having a large belly
- vituperation — verbal abuse or castigation; violent denunciation or condemnation.
- vituperatory — abusive or blaming
- vortex depth — The vortex depth is the depth below an impeller at which its influence can still be seen in a mixed fluid.