16-letter words containing a, s, p, r, i
- 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.
- ultramicroscopic — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- uncinate process — a curved, bony process on certain ribs of birds that projects backward and overlaps the succeeding rib, serving to strengthen the thorax.
- unimpressionable — easily impressed or influenced; susceptible: an impressionable youngster.
- unrepresentative — a person or thing that represents another or others.
- upland sandpiper — a large, field-inhabiting sandpiper, Bartramia longicauda, of eastern North America, resembling a plover: now protected and increasing in numbers.
- upsilon particle — the 20th letter of the Greek alphabet (Υ, υ).
- vapor combustion — Vapor combustion is a closed burn system used for treating liquid waste which contains volatile organic compounds.
- videodisc player — an electronic device for playing videodiscs through a television set.
- 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
- washing-up water — water used for washing dishes
- water-base paint — latex paint.
- weatherstripping — A piece of weatherstrip material.
- windfall profits — Windfall profits are excessive profits with a non-business cause such as a natural disaster.
- windward passage — a strait in the West Indies, between Cuba and Haiti. 50 miles (80 km) wide.
- wisconsin rapids — a city in central Wisconsin.
- writ of subpoena — a legal document commanding the attendance in court, as a witness, of the person on whom it is served, under a penalty
- zygosporangium's — a sporangium that bears a zygospore.