16-letter words containing a, p, l, n
- unpredictability — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- unproportionally — having due proportion; corresponding.
- upland sandpiper — a large, field-inhabiting sandpiper, Bartramia longicauda, of eastern North America, resembling a plover: now protected and increasing in numbers.
- upper palatinate — See under Palatinate (def 1).
- 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
- 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
- welfare payments — government benefits
- 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.
- 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
- xenotransplanted — Transplanted by xenotransplantation.
- yellow poinciana — royal poinciana.