13-letter words containing p, a, r, o
- vacation trip — a trip undertaken during a vacation
- vagodepressor — decreasing or mimicking the decrease of the activity of the vagus nerve.
- valproic acid — a carboxylic acid, C 8 H 16 O 2 , used for its antiepileptic properties in the treatment of various seizures including petit mal.
- vapor barrier — a layer of material, as plastic film or foil, used to protect installed insulation by retarding the transmission of moisture from the interior environment.
- vapor tension — vapor pressure.
- vapourer moth — a tussock moth, Orgyia antiqua, of hedgerows and trees, the female of which is wingless and lays her eggs on her former cocoon
- vapourishness — the quality or state of being vapourish
- visual foxpro — (database) A Microsoft database derived from Fox Software's FoxPRO.
- wafflestomper — a shoe with a thick sole resembling a waffle
- wall cupboard — a cupboard that is fixed to a wall
- walter piston — Walter, 1894–1976, U.S. composer.
- warping board — a rectangular board containing evenly spaced pegs at each end on which the warp is wound in preparation for weaving.
- waste product — material discarded as useless in the process of producing something.
- water opossum — yapok.
- water-proofed — impervious to water.
- watering spot — watering hole
- waterproofing — Chiefly British. a raincoat or other outer coat impervious to water.
- waterscorpion — any of several predaceous aquatic bugs of the family Nepidae, having clasping front legs and a long respiratory tube at the rear of the abdomen: capable of biting if handled.
- waygoing crop — away-going crop.
- weapons-grade — Weapons-grade substances such as uranium or plutonium are of a quality which makes them suitable for use in the manufacture of nuclear weapons.
- weatherperson — a meteorologist or weathercaster.
- weatherproofs — Third-person singular simple present indicative form of weatherproof.
- well-operated — to work, perform, or function, as a machine does: This engine does not operate properly.
- west paterson — a town in NE New Jersey.
- wolverhampton — a city in West Midlands, in W England.
- word painting — an effective verbal description.
- word wrapping — In computing, word wrapping is a process by which a word which comes at the end of a line is automatically moved onto a new line in order to keep the text within the margins.
- work stoppage — the collective stoppage of work by employees in a business or an industry to protest working conditions.
- working party — A working party is a committee which is formed to investigate a particular situation or problem and to produce a report containing its opinions and suggestions.
- xerophthalmia — abnormal dryness of the eyeball characterized by conjunctivitis, caused by a deficiency of tears and attributed to a lack of vitamin A.
- xerophthalmic — Of or pertaining to xerophthalmia.
- xiphiplastron — the fourth lateral plate of a turtle's plastron
- xylographical — Xylographic.
- yellow poplar — tulip tree (def 1).
- york imperial — an American variety of yellow or green apple with red stripes.
- zinjanthropus — the genus to which Australopithecus boisei was formerly assigned.
- zoogeographer — A person involved in zoogeography.
- zoogeographic — Pertaining to zoogeography.
- zoopraxiscope — an early type of motion-picture projector, designed by Eadweard Muybridge, in which the images were drawings or photographs placed along the rim of a circular glass plate, the shutter was a rotating opaque disk with radial slots, and a limelight source was used.
- zoosporangium — a sporangium or spore case in which zoospores are produced.
- zygosporangia — a sporangium that bears a zygospore.