16-letter words containing p, o, l, n
- topsail schooner — a sailing vessel fore-and-aft rigged on all of two or more masts with square sails above the foresail, and often with a square sail before the foresail.
- torsion pendulum — a pendulum the weight of which is rotated alternately in opposite directions through a horizontal plane by the torsion of the suspending rod or spring: used for clocks intended to run a long time between windings.
- transport police — the national police force for railways in Britain, which protects rail operators, staff and passengers
- trial separation — an experimental period of living apart
- triple-expansion — noting a power source, especially a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders.
- tropical cyclone — a cyclone that originates over a tropical ocean area and can develop into the destructive storm known in the U.S. as a hurricane, in the western Pacific region as a typhoon, and elsewhere by other names. Compare extratropical cyclone, hurricane (def 1), willy-willy.
- two-percent milk — Two-percent milk is milk from which some of the cream has been removed.
- unaccomplishable — to bring to its goal or conclusion; carry out; perform; finish: to accomplish one's mission.
- unapologetically — containing an apology or excuse for a fault, failure, insult, injury, etc.: An apologetic letter to his creditors explained the delay.
- uncomprehensible — capable of being comprehended or understood; intelligible.
- uncompromisingly — not admitting of compromise or adjustment of differences; making no concessions; inaccessible to flexible bargaining; unyielding: an uncompromising attitude.
- under bare poles — (of a sailing vessel) with no sails set
- under the plough — If an area of land is under the plough, it is used for growing crops. If land is brought or put under the plough, it is ploughed for the first time and is then used for growing crops.
- under-employment — employed at a job that does not fully use one's skills or abilities.
- unimpressionable — easily impressed or influenced; susceptible: an impressionable youngster.
- unimproved value — the valuation of land for rating purposes, disregarding the value of buildings or other development
- unproportionally — having due proportion; corresponding.
- unpublished work — a literary work that has not been reproduced for sale or publicly distributed.
- unscrupulousness — not scrupulous; unrestrained by scruples; conscienceless; unprincipled.
- upper lough erne — a lough in Northern Ireland, fed by the river Erne
- upsilon particle — the 20th letter of the Greek alphabet (Υ, υ).
- vapor channeling — Vapor channeling exists when vapor flow is distributed in an unequal way in a distillation vessel or stage.
- vegetable sponge — loofah (def 2).
- ventriculography — radiography of the ventricles of the heart after injection of a contrast medium
- verneuil process — a process for making synthetic rubies, sapphires, spinels, etc., by the fusion at high temperatures of powdered compounds.
- vinylidene group — the bivalent group C 2 H 2 , derived from ethylene.
- vinylpyrrolidone — Vinylpyrrolidone is a substance used as a binder in pharmaceuticals.
- virginia cowslip — a perennial woodland plant (Mertensia virginica) of the borage family, native to E North America and having clusters of blue or purple, bell-shaped flowers
- voluntary helper — a person who aids or assists in a specified function of one's own accord and without compulsion or promise of remuneration
- well-compensated — to recompense for something: They gave him ten dollars to compensate him for his trouble.
- willow ptarmigan — a ptarmigan, Lagopus lagopus, of arctic and subarctic regions of the New and Old Worlds, having brown, mottled plumage in summer and white plumage in winter.
- windfall profits — Windfall profits are excessive profits with a non-business cause such as a natural disaster.
- windowpane shell — capiz.
- wolfenden report — a study produced in 1957 by the Committee on Homosexual Offences and Prostitution in Britain, which recommended that homosexual relations between consenting adults be legalized
- world bank group — the collective name for the International Bank for Reconstruction and Development, the International Finance Corporation, and the International Development Association, whose headquarters are all in Washington
- world exposition — world's fair.
- xenotransplanted — Transplanted by xenotransplantation.
- yellow pimpernel — Lysimachia nemorum
- yellow poinciana — royal poinciana.
- zenith telescope — a telescope mounted to point only at the zenith, used at some observatories for measuring time by the stars.