16-letter words containing p, a, t, r, i, l
- triphenylmethane — a colorless, crystalline, solid compound containing three benzene rings, C 19 H 16 , from which many dyes are derived.
- 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.
- ultracrepidarian — noting or pertaining to a person who criticizes, judges, or gives advice outside the area of his or her expertise: The play provides a classic, simplistic portrayal of an ultracrepidarian mother-in-law.
- ultramicroscopic — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- undercapitalized — having insufficient capital for the efficient operation of a commercial enterprise
- underpitch vault — a construction having a central vault intersected by vaults of lower pitch.
- unparticularized — to make particular.
- unpredictability — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- unproportionally — having due proportion; corresponding.
- up with the lark — up early in the morning
- upper palatinate — See under Palatinate (def 1).
- upsilon particle — the 20th letter of the Greek alphabet (Υ, υ).
- ventriculography — radiography of the ventricles of the heart after injection of a contrast medium
- virtual particle — an elementary particle of transitory existence that does not appear as a free particle in a particular situation but that can transmit a force from one particle to another.
- walk a tightrope — be in a precarious position
- water lily tulip — a showy tulip, Tulipa kaufmanniana, of Turkestan, having spreading, white or pale-yellow flowers with yellow centers streaked with red.
- well-appreciated — to be grateful or thankful for: They appreciated his thoughtfulness.
- 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.