16-letter words containing p, o, l, i, n
- 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.
- 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- unpublished work — a literary work that has not been reproduced for sale or publicly distributed.
- 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.
- 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
- 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.
- world exposition — world's fair.
- 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.